diff --git a/project.clj b/project.clj
index 7ded775..a4851e4 100644
--- a/project.clj
+++ b/project.clj
@@ -9,19 +9,17 @@
   :resource-paths ["src/main/resources"]
   :dependencies [[org.clojure/clojure "1.11.1"]
                 ;; Incoming HTTP
-                 [ring/ring-core          "1.9.6"]
-                 [ring/ring-jetty-adapter "1.9.6"]
+                 [ring/ring-core          "1.10.0"]
+                 [ring/ring-jetty-adapter "1.10.0"]
                  [ring/ring-mock          "0.4.0"]
                  [metosin/muuntaja        "0.6.8"]
-                 [metosin/reitit          "0.5.18"]
+                 [metosin/reitit          "0.6.0"]
                 ;; Outgoing HTTP
                  [hato               "0.9.0"]
                  [cheshire/cheshire  "5.11.0"]
                  [com.cognitect/transit-clj "1.0.333"]
-                 [lambdaisland/uri "1.13.95"]
-                 [clj-turtle "0.1.3"]
-                 [org.clojars.quoll/raphael "0.1.6"]
-                 [instaparse "1.4.12"]]
+                 [lambdaisland/uri "1.15.125"]
+                 [org.eclipse.rdf4j/rdf4j-rio-turtle "4.3.2"]]
   :main ^:skip-aot org.domaindrivenarchitecture.activity-pub-poc.core
   :profiles {:test {:test-paths ["src/test/clj"]
                     :resource-paths ["src/test/resources"]
diff --git a/src/main/clj/org/domaindrivenarchitecture/activity_pub_poc/core.clj b/src/main/clj/org/domaindrivenarchitecture/activity_pub_poc/core.clj
index 3ea82a0..f1f8c04 100644
--- a/src/main/clj/org/domaindrivenarchitecture/activity_pub_poc/core.clj
+++ b/src/main/clj/org/domaindrivenarchitecture/activity_pub_poc/core.clj
@@ -1,7 +1,6 @@
 (ns org.domaindrivenarchitecture.activity-pub-poc.core
   (:require [lambdaisland.souk.activitypub :as ap]
             [lambdaisland.souk.json-ld :as ld]
-            [quoll.raphael.core :refer [parse]]
             [org.domaindrivenarchitecture.activity-pub-poc.common :as cm]            
             [clojure.spec.alpha :as s]
             [clojure.inspector :as ins]
@@ -20,17 +19,6 @@
 
 (def team (ap/GET team-url))
 
-
-(def parsed-rdf-syntax (parse (slurp cm/activitystreams-ttl)))
-
-
-; ToDo
-; Prädikat das langString parsen/validieren kann, evtl auch für xsd:string
-; Prädikat für Name und Person ausformulieren
-
-
-
-
 ;;(ins/inspect-tree team-ld)
 ;;(ins/inspect-tree team)
 
diff --git a/src/test/clj/org/domaindrivenarchitecture/activity_pub_poc/core_test.clj b/src/test/clj/org/domaindrivenarchitecture/activity_pub_poc/core_test.clj
index 621df7d..1040c5f 100644
--- a/src/test/clj/org/domaindrivenarchitecture/activity_pub_poc/core_test.clj
+++ b/src/test/clj/org/domaindrivenarchitecture/activity_pub_poc/core_test.clj
@@ -1,6 +1,11 @@
 (ns org.domaindrivenarchitecture.activity-pub-poc.core-test
   (:require [clojure.test :refer :all]
+            [clojure.java.io :as io]
             [org.domaindrivenarchitecture.activity-pub-poc.core :as sut]))
 
-(deftest get-property-type-from-ld-resource
-  (is (= 0 1)))
\ No newline at end of file
+(def activity-streams-ttl (slurp (io/resource "activitystreams_2.0_owl.ttl")))
+
+(deftest should-generate-spec
+  (is (= "(s/def ::activitystreams/name (s/or xsd/string? rdf/langString?))"
+         (sut/generate-spec activity-streams-ttl ":activitystreams/name" 
+                            ["xsd/string?" "rdf/langString"]))))
\ No newline at end of file