diff --git a/ontology/saref4ehaw.ttl b/ontology/saref4ehaw.ttl
index a48ea61b359282eebebd2326eb400a036908e31e..4f33c18b37d2b6cfe97de9f6c156856ebd6e2a30 100644
--- a/ontology/saref4ehaw.ttl
+++ b/ontology/saref4ehaw.ttl
@@ -13,24 +13,24 @@
 @base <https://saref.etsi.org/saref4ehaw/> .
 
 <https://saref.etsi.org/saref4ehaw/> rdf:type owl:Ontology ;
-                                      owl:imports <https://saref.etsi.org/core/v3.1.1/> ;
-				      dcterms:creator <http://www-public.imtbs-tsp.eu/~girodgen/> ;
-                                      dcterms:contributor <https://www.linkedin.com/in/lina-nachabe-2b292457/> ,
-						          <https://research.utwente.nl/en/persons/jo%C3%A3o-luiz-moreira> ,
-                                                          <https://pdi.fbk.eu/people/profile/dragoni> ,
-                                                          <http://www.maxime-lefrancois.info/> ;
-				      dcterms:publisher <https://www.etsi.org/> ;
-				      dcterms:license <https://forge.etsi.org/etsi-software-license> ;
-                                      dcterms:source <https://saref.etsi.org/sources/saref4ehaw/> ;
-                                      owl:versionIRI <https://saref.etsi.org/saref4ehaw/v1.1.1/> ;
-                                      owl:versionInfo "v1.1.1" ;
-                                      vann:preferredNamespacePrefix "s4ehaw" ;
-                                      vann:preferredNamespaceUri "https://saref.etsi.org/saref4ehaw/" ;
-                                      dcterms:issued "2020-02-01"^^xsd:date ;
-				      dcterms:modified "2020-05-01"^^xsd:date ;
-                                      rdfs:seeAlso <https://www.etsi.org/deliver/etsi_ts/103400_103499/10341008/01.01.01_60/ts_10341008v010101p.pdf> ;
-                                      dcterms:title "SAREF4EHAW: an extension of SAREF for eHealth Ageing Well domain"@en ;
-                                      dcterms:description """The objective of SAREF4EHAW is to extend SAREF ontology for the eHealth/Ageing-well (EHAW) vertical. Clause 4.1 of the present document shortly introduces a high level view of the envisioned SAREF4EHAW semantic model and modular ontology, with the retained concepts (i.e. classes) and their relations. 
+  owl:imports <https://saref.etsi.org/core/v3.1.1/> ;
+  dcterms:creator <http://www-public.imtbs-tsp.eu/~girodgen/> ;
+  dcterms:contributor <https://www.linkedin.com/in/lina-nachabe-2b292457/> ,
+    <https://research.utwente.nl/en/persons/jo%C3%A3o-luiz-moreira> ,
+    <https://pdi.fbk.eu/people/profile/dragoni> ,
+    <http://www.maxime-lefrancois.info/> ;
+  dcterms:publisher <https://www.etsi.org/> ;
+  dcterms:license <https://forge.etsi.org/etsi-software-license> ;
+  dcterms:source <https://saref.etsi.org/sources/saref4ehaw/> ;
+  owl:versionIRI <https://saref.etsi.org/saref4ehaw/v1.1.1/> ;
+  owl:versionInfo "v1.1.1" ;
+  vann:preferredNamespacePrefix "s4ehaw" ;
+  vann:preferredNamespaceUri "https://saref.etsi.org/saref4ehaw/" ;
+  dcterms:issued "2020-02-01"^^xsd:date ;
+  dcterms:modified "2020-05-01"^^xsd:date ;
+  rdfs:seeAlso <https://www.etsi.org/deliver/etsi_ts/103400_103499/10341008/01.01.01_60/ts_10341008v010101p.pdf> ;
+  dcterms:title "SAREF4EHAW: an extension of SAREF for eHealth Ageing Well domain"@en ;
+  dcterms:description """The objective of SAREF4EHAW is to extend SAREF ontology for the eHealth/Ageing-well (EHAW) vertical. Clause 4.1 of the present document shortly introduces a high level view of the envisioned SAREF4EHAW semantic model and modular ontology, with the retained concepts (i.e. classes) and their relations. 
 SAREF4EHAW extension has been specified and formalised by investigating EHAW domain related resources, as reported in ETSI TR 103 509, such as: potential stakeholders, standardization initiatives, alliances/associations, European projects, EC directives, existing ontologies, and data repositories. Therefore, SAREF4EHAW modular ontology shall both:
  - Allow the implementation of a limited set of typical EHAW related use cases already identified in ETSI TR 103 509, i.e.
  - Use case 1 “elderly at home monitoring and support”,