diff --git a/src/app/services/resources.service.ts b/src/app/services/resources.service.ts
index e8a54f3..a31b609 100644
--- a/src/app/services/resources.service.ts
+++ b/src/app/services/resources.service.ts
@@ -1,37 +1,49 @@
 import { HttpClient, HttpHeaders } from '@angular/common/http';
 import { Injectable } from '@angular/core';
+import namespaces from '../../assets/namespaces.json';
 
 @Injectable()
 
 export class DataService {
   constructor(private http: HttpClient) {
   }
 
   readonly httpOptions = {
     headers: new HttpHeaders({
       'Content-Type': 'application/sparql-query',
       'Accept':  'application/sparql-results+json; charset=UTF-8'
     })
   };
 
   baseUrl = 'http://localhost:3030/nietzsche/query';
   prefix = 'http://www.nie.org/ontology/nietzsche#'
   prefix2 = 'http://rdfh.ch/projects/0068#'
   fallBackQuery = 'prefix tln: <' + this.prefix + '> prefix data: <' + this.prefix2 + '> ' + '  SELECT ?s ?p ?o WHERE' +
     ' { ?s a tln:Word . ?s tln:hasText ?o ' +
     ' OPTIONAL { ?s ?p ?o } ' +
     ' } LIMIT 50';
 
 
   public getData(query: string) {
     if (this.baseUrl && query && this.httpOptions.headers) {
       return this.http.post(this.baseUrl, query, this.httpOptions);
     }
     if (this.baseUrl && this.httpOptions.headers && (query === undefined || query === null || query === '') ) {
       console.log('fallback to static query as there is no query passed: ' + this.fallBackQuery);
       const fuu =  this.http.post(this.baseUrl, this.fallBackQuery, this.httpOptions);
       // console.log(fuu)
       return fuu;
     }
   }
+
+  public shrink_iri(iri) {
+    let shrunkIri: string;
+    Object.keys(namespaces).forEach((ns, index) => {
+      // console.log(this.namespaces[ns] + ' key ' + ns )
+      if (iri.includes(namespaces[ns])) {
+        shrunkIri =  iri.replace(namespaces[ns], ns );
+      }
+    });
+    if (shrunkIri) { return shrunkIri; }
+  }
 }