diff --git a/doc/Translate_ttl_to_spec.md b/doc/Translate_ttl_to_spec.md
index 0e1c86b..4512cd1 100644
--- a/doc/Translate_ttl_to_spec.md
+++ b/doc/Translate_ttl_to_spec.md
@@ -1,6 +1,18 @@
+- [receipts to transform ttl to spec](#receipts-to-transform-ttl-to-spec)
+  - [**a**](#a)
+  - [**rdfs:range**](#rdfsrange)
+  - [**rdfs:domain**](#rdfsdomain)
+    - [owner is **a** type](#owner-is-a-type)
+    - [owner is a **owl:unionOf** types](#owner-is-a-owlunionof-types)
+- [Further infos](#further-infos)
+  - [RDF/S](#rdfs)
+    - [range (https://www.w3.org/TR/rdf12-schema/#ch\_range)](#range-httpswwww3orgtrrdf12-schemach_range)
+    - [type (https://www.w3.org/TR/rdf12-schema/#ch\_type)](#type-httpswwww3orgtrrdf12-schemach_type)
+
+
 # receipts to transform ttl to spec
 
-## *it* **a** *something*
+## **a**
 
 *it* is **a** *something*
 
@@ -28,6 +40,66 @@ Der token `a` in einer ttl Definition entspricht dem RDF-Prädikat `rdf:type`. S
 
 Das bedeutet für das Tripel: `(R, rdf:type, C) => C instanceof rdfs:Class & R instanceof C`
 
+
+## **rdfs:range**
+
+*its* value is defined in a **rdfs:range** *the range*
+
+If range links to an other definition we map range same as **a**.
+
+Example:
+```ttl
+as:id rdfs:range xsd:anyURI ;
+```
+
+Maps to
+```clojure
+(s/def ::anyURI p/uri-string?)
+
+(s/def ::id 
+    (s/and 
+        ...
+        ::anyURI))
+```
+
+## **rdfs:domain**
+
+*it* belong to a **rdfs:domain** *owner*
+
+### owner is **a** type
+
+It is added to the owner. That's the way to model properties. If the owner is membe of an other namespace, we create a subclass with same name in the namespce in scope and enhance the subclass.
+
+Example in namespace activitypub2
+```ttl
+as:id rdfs:domain [a owl:Class;]
+```
+
+Maps to
+```clojure
+(s/def
+  ::Class
+  (s/merge ::owl/Class
+           (s/keys :opt-un [::id])))
+```
+
+### owner is a **owl:unionOf** types
+
+It is added to the owner. That's the way to model properties. If the owner is membe of an other namespace, we create a subclass with same name in the namespce in scope and enhance the subclass.
+
+Example in namespace activitypub2
+```ttl
+as:id rdfs:domain [owl:unionOf (as:Link as:Object)]
+```
+
+Maps to
+```clojure
+(s/def ::Object (s/keys :opt-un [::id ...]))
+
+
+(s/def ::Link (s/keys :opt-un [::id]))
+```
+
 # Further infos
 
 ## RDF/S
diff --git a/project.clj b/project.clj
index 093ce80..4084f5e 100644
--- a/project.clj
+++ b/project.clj
@@ -25,6 +25,7 @@
                  [org.clojars.quoll/raphael "0.1.6"]
                  [instaparse "1.4.12"]]
   :main ^:skip-aot org.domaindrivenarchitecture.activity-pub-poc.core
-  :profiles {:test {:test-paths ["src/test/clj"]
+  :profiles {:test {:test-paths ["src/test/cljc"
+                                 "src/test/clj"]
                     :resource-paths ["src/test/resources"]
                     :dependencies [[dda/data-test "0.1.1"]]}})
diff --git a/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2.cljc b/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2.cljc
index 71b718a..31674d0 100644
--- a/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2.cljc
+++ b/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2.cljc
@@ -1,12 +1,58 @@
 (ns org.domaindrivenarchitecture.activity-pub-poc.activitystreams2
   (:require [clojure.spec.alpha :as s]
+            [orchestra.core :refer [defn-spec]]
             [org.domaindrivenarchitecture.activity-pub-poc.owl :as owl]
-            [org.domaindrivenarchitecture.activity-pub-poc.rdf :as rdf]
-            [org.domaindrivenarchitecture.activity-pub-poc.core :as core]))
+            [org.domaindrivenarchitecture.activity-pub-poc.xsd :as xsd]))
+
+(defn-spec 
+  is-functional-property? boolean?
+  "Checks whether spec is a FunctionalProperty."
+  [spec keyword?]
+  (some #(clojure.string/includes? % "FunctionalProperty") (s/describe spec)))
 
 ;http://www.w3.org/ns/activitystreams#id
-;TODO: how do we translate this? rdfs:domain [a owl:Class ;    owl:unionOf (as:Link as:Object)]
-(s/def ::id (s/and ::owl/FunctionalProperty
-                   ::owl/DatatypeProperty
-                   ::owl/DeprecatedProperty
-                   core/uri-string?))
+(s/def
+  ::id (s/and ::owl/DatatypeProperty
+              ::owl/FunctionalProperty
+              ::owl/DeprecatedProperty
+              ::xsd/anyURI))
+
+;http://www.w3.org/ns/activitystreams#attachment
+(s/def ::attachment 
+  (s/and 
+   ::owl/ObjectProperty
+   ::Class
+   ::Link
+   ::Object))
+
+;http://www.w3.org/ns/activitystreams#result
+(s/def ::result 
+  (s/and 
+   ::owl/ObjectProperty
+   ::Class
+   ::Object
+   ::Link))
+
+;http://www.w3.org/ns/activitystreams#Activity
+;TODO: definition in progress
+(s/def ::Activity 
+  (s/and ::Object
+         (s/keys :opt-un [::result])))
+
+;http://www.w3.org/ns/activitystreams#Object
+;TODO: definition in progress
+(s/def ::Object (s/keys :opt-un [::id ::attachment]))
+
+
+;http://www.w3.org/ns/activitystreams#Link
+;TODO: definition in progress
+(s/def ::Link (s/keys :opt-un [::id]))
+
+(s/def
+  ::Class
+  (s/merge ::owl/Class
+           (s/keys :opt-un [::id])))
+
+
+;http://www.w3.org/ns/activitystreams#Like
+(s/def ::Like ::Activity)
\ No newline at end of file
diff --git a/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/owl.cljc b/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/owl.cljc
index 20cd38a..7e0ccf6 100644
--- a/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/owl.cljc
+++ b/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/owl.cljc
@@ -1,12 +1,18 @@
 (ns org.domaindrivenarchitecture.activity-pub-poc.owl
   "A swallow spec translation implementation of owl. Inheritance of FunctionalProperty 
    is realized in deep implemented."
-  (:require [clojure.spec.alpha :as s]))
+  (:require
+   [clojure.spec.alpha :as s]
+   [orchestra.core :refer [defn-spec]]))
 
 ; Properties:https://www.w3.org/TR/owl-ref/#Property
 ; * Datatype properties link individuals to data values.
 ; * Object properties link individuals to individuals.
 
+;http://www.w3.org/2002/07/owl#Class
+;https://www.w3.org/TR/owl-ref/#Class-def
+(s/def ::Class any?)
+
 ;http://www.w3.org/2002/07/owl#DatatypeProperty
 (s/def ::DatatypeProperty any?)
 
@@ -15,8 +21,22 @@
 
 ;http://www.w3.org/2002/07/owl#FunctionalProperty
 ;https://www.w3.org/TR/owl-ref/#FunctionalProperty-def
-(s/def ::FunctionalProperty any?)
+(defn-spec 
+  functional? boolean?
+  [elem any?]
+  (and
+   (some? elem)
+   (or
+    (not (coll? elem))
+    (and (vector? elem) (= 1 (count elem)))
+    (and (list? elem) (= 1 (count elem))))))
+(s/def ::FunctionalProperty functional?)
 
 ;http://www.w3.org/2002/07/owl#DeprecatedProperty
 ;https://www.w3.org/TR/owl-ref/#Deprecation
 (s/def ::DeprecatedProperty any?)
+
+
+;http://www.w3.org/2002/07/owl#ObjectProperty
+;https://www.w3.org/TR/owl-ref/#ObjectProperty
+(s/def ::ObjectProperty any?)
\ No newline at end of file
diff --git a/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/xsd.cljc b/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/xsd.cljc
index 2fecabf..578afab 100644
--- a/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/xsd.cljc
+++ b/src/main/cljc/org/domaindrivenarchitecture/activity_pub_poc/xsd.cljc
@@ -1,6 +1,5 @@
 (ns org.domaindrivenarchitecture.activity-pub-poc.xsd
-  "A swallow spec translation implementation of xsd Inheritance of FunctionalProperty 
-     is realized in deep implemented."
+  "A spec translation implementation of xsd. Predicates are implemented fully functional."
   (:require [clojure.spec.alpha :as s]
             [org.domaindrivenarchitecture.activity-pub-poc.predicates :as p]))
 
diff --git a/src/test/clj/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2_legacy_test.clj b/src/test/clj/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2_legacy_test.clj
new file mode 100644
index 0000000..f79b52e
--- /dev/null
+++ b/src/test/clj/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2_legacy_test.clj
@@ -0,0 +1,28 @@
+(ns org.domaindrivenarchitecture.activity-pub-poc.activitystreams2-legacy-test
+  (:require
+   [clojure.test :refer [deftest is are testing run-tests]]
+   [clojure.spec.test.alpha :as st]
+   [clojure.spec.alpha :as s]
+   [org.domaindrivenarchitecture.activity-pub-poc.activitystreams2-legacy :as sut]))
+
+;(deftest id-test
+;  (is (s/valid? ::sut/id "https://social.bla/alyssa/status/RANDOMHASH")))
+
+;(deftest type-test
+;  (is (s/valid? ::sut/type "Note"))
+;  (is (s/valid? ::sut/type "Link"))
+;  (is (not(s/valid? ::sut/type "non existing"))))
+
+;(deftest object-test
+;              (is (s/valid? ::sut/Object "https://social.bla/alyssa/status/RANDOMHASH")
+;              (is (s/valid? ::sut/Object {:id "https://social.bla/alyssa/status/RANDOMHASH" :type "Page"}))))
+;
+;(deftest link-test
+;              (is (s/valid? ::sut/Link {:type "Link"})))
+
+;(deftest Note-test
+;  (is (s/valid?
+;       ::sut/Note
+;       {:id "https://social.bla/alyssa/status/RANDOMHASH"
+;        :type "Note"
+;        :content "text"})))
diff --git a/src/test/clj/org/domaindrivenarchitecture/activitystreams2_test.clj b/src/test/clj/org/domaindrivenarchitecture/activitystreams2_test.clj
deleted file mode 100644
index 59b6738..0000000
--- a/src/test/clj/org/domaindrivenarchitecture/activitystreams2_test.clj
+++ /dev/null
@@ -1,28 +0,0 @@
-(ns org.domaindrivenarchitecture.activity-pub-poc.activitystreams2-test
-  (:require
-   [clojure.test :refer [deftest is are testing run-tests]]
-   [clojure.spec.test.alpha :as st]
-   [clojure.spec.alpha :as s]
-   [org.domaindrivenarchitecture.activity-pub-poc.activitystreams2 :as sut]))
-
-(deftest id-test
-  (is (s/valid? ::sut/id "https://social.bla/alyssa/status/RANDOMHASH")))
-
-(deftest type-test
-  (is (s/valid? ::sut/type "Note"))
-  (is (s/valid? ::sut/type "Link"))
-  (is (not(s/valid? ::sut/type "non existing"))))
-
-(deftest object-test
-              (is (s/valid? ::sut/Object "https://social.bla/alyssa/status/RANDOMHASH")
-              (is (s/valid? ::sut/Object {:id "https://social.bla/alyssa/status/RANDOMHASH" :type "Page"}))))
-
-(deftest link-test
-              (is (s/valid? ::sut/Link {:type "Link"})))
-
-;(deftest Note-test
-;  (is (s/valid?
-;       ::sut/Note
-;       {:id "https://social.bla/alyssa/status/RANDOMHASH"
-;        :type "Note"
-;        :content "text"})))
diff --git a/src/test/cljc/org/activitystreams2_test.clj b/src/test/cljc/org/activitystreams2_test.clj
deleted file mode 100644
index 5944812..0000000
--- a/src/test/cljc/org/activitystreams2_test.clj
+++ /dev/null
@@ -1,9 +0,0 @@
-(ns org.domaindrivenarchitecture.activity-pub-poc.activitystreams2-test
-  (:require
-   [clojure.test :refer [deftest is are testing run-tests]]
-   [clojure.spec.test.alpha :as st]
-   [clojure.spec.alpha :as s]
-   [org.domaindrivenarchitecture.activity-pub-poc.activitystreams2 :as sut]))
-
-(deftest id-test
-        (is true))
\ No newline at end of file
diff --git a/src/test/cljc/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2_test.clj b/src/test/cljc/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2_test.clj
new file mode 100644
index 0000000..1ef4f0b
--- /dev/null
+++ b/src/test/cljc/org/domaindrivenarchitecture/activity_pub_poc/activitystreams2_test.clj
@@ -0,0 +1,17 @@
+(ns org.domaindrivenarchitecture.activity-pub-poc.activitystreams2-test
+  (:require
+   [clojure.test :refer [deftest is are testing run-tests]]
+   [clojure.spec.test.alpha :as st]
+   [clojure.spec.alpha :as s]
+   [org.domaindrivenarchitecture.activity-pub-poc.activitystreams2 :as sut]))
+
+(deftest shoult-test-spec-for-having-functional-property
+  (is (sut/is-functional-property? ::sut/id))
+  (is (not (sut/is-functional-property? ::sut/Like))))
+
+(deftest id-test
+  (is (s/valid? ::sut/id "https://social.bla/alyssa/status/RANDOMHASH"))
+  (is (not (s/valid? ::sut/id nil)))
+  (is (not (s/valid? ::sut/id 2)))
+  (is (not (s/valid? ::sut/id "no-uri")))
+  )
\ No newline at end of file
diff --git a/src/test/cljc/org/domaindrivenarchitecture/activity_pub_poc/owl_test.cljc b/src/test/cljc/org/domaindrivenarchitecture/activity_pub_poc/owl_test.cljc
new file mode 100644
index 0000000..427751f
--- /dev/null
+++ b/src/test/cljc/org/domaindrivenarchitecture/activity_pub_poc/owl_test.cljc
@@ -0,0 +1,14 @@
+(ns org.domaindrivenarchitecture.activity-pub-poc.owl-test
+  (:require
+   [clojure.test :refer [deftest is are testing run-tests]]
+   [clojure.spec.test.alpha :as st]
+   [clojure.spec.alpha :as s]
+   [org.domaindrivenarchitecture.activity-pub-poc.owl :as sut]))
+
+(deftest functional-predicate
+  (is (sut/functional? "str"))
+  (is (sut/functional? 2))
+  (is (sut/functional? ["str"]))
+  (is (not (sut/functional? [])))
+  (is (not (sut/functional? nil)))
+  (is (not (sut/functional? [1 2]))))
\ No newline at end of file
diff --git a/src/test/resources/like.json b/src/test/resources/like.json
index 5566c6b..ffd8244 100644
--- a/src/test/resources/like.json
+++ b/src/test/resources/like.json
@@ -1 +1,11 @@
-{"@context":"https://www.w3.org/ns/activitystreams","id":"https://social.bla/alyssa#likes/RANDOMHASH","type":"Like","to":["https://chatty.bla/ben","https://chatty.bla/gen"],"actor":"https://social.bla/alyssa","object":"https://chatty.bla/ben/posts/234s23-2g34234-2hhj536"}
\ No newline at end of file
+{
+    "@context": "https://www.w3.org/ns/activitystreams",
+    "id": "https://social.bla/alyssa#likes/RANDOMHASH",
+    "type": "Like",
+    "to": [
+        "https://chatty.bla/ben",
+        "https://chatty.bla/gen"
+    ],
+    "actor": "https://social.bla/alyssa",
+    "object": "https://chatty.bla/ben/posts/234s23-2g34234-2hhj536"
+}
\ No newline at end of file