# How to import two ontologies with two different Labels for the owl:Class? **URL:** \ **Category:** Linked Data, RDF, Ontology\ **Created:** [March 29, 2022, 3:39pm UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097 "2022-03-29T15:39:05Z")\ **Posts on this page:** 11\ **Page:** 1
**Author:** ![siham.elfedali](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/siham.elfedali/32/3932_2.png) [@siham.elfedali](https://community.neo4j.com/u/siham.elfedali)\ **Post date:** [March 29, 2022, 3:39pm UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/1 "2022-03-29T15:39:05Z")
Hello, I am working on Neo4j v4.3 (Community) and with neosematics (n10s) v4.3.0, I have two ontologies to import into the same Graph. the problem is I can't import the two ontologies with two different Labels for the owl: Class. Does someone have any suggestions? Thanks for your help. ---
**Author:** ![jesus\_barrasa](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/jesus_barrasa/32/27513_2.png) [@jesus\_barrasa](https://community.neo4j.com/u/jesus_barrasa)\ **Post date:** [March 29, 2022, 6:14pm UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/2 "2022-03-29T18:14:10Z")
You're right, once you set the label you want to use for owl:Class instances, it will be applied to all the ontologies you import. What's the rationale behind wanting to change it on a per ontology basis? Items should be uniquely identified by URI so no problem to track provenance. If you want to add additional tagging you can maybe combine `n10s.rdf.stream.*` with custom cypher? JB ---
**Author:** ![siham.elfedali](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/siham.elfedali/32/3932_2.png) [@siham.elfedali](https://community.neo4j.com/u/siham.elfedali)\ **Post date:** [March 30, 2022, 7:53am UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/3 "2022-03-30T07:53:25Z")
Actually for my use case I want to visualize those ontologies in the front end of my application, so I need to keep the owl:Class of every ontology separate for example for the first ontology I want the owl:Class with the label **IfcClass** and for the second ontology I want to set the owl:Class with the label **RSMClass**. Concerning the use of n10s.rdf.stream.\* it's not the best choice for me because I want to write the both ontologies in my DB. ---
**Author:** ![jesus\_barrasa](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/jesus_barrasa/32/27513_2.png) [@jesus\_barrasa](https://community.neo4j.com/u/jesus_barrasa)\ **Post date:** [March 30, 2022, 8:12am UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/4 "2022-03-30T08:12:56Z")
I think that's exactly what you would achieve with `rdf.stream`. You first import the ontology in the standard way via `n10s.onto.import.*` and then do a second pass on the same ontology with `n10s.rdf.stream.*` just adding the additional label on the classes. At the end all owl classes would be both a Class **and** an LFCClass, an RSMClass, etc... You can have multiple labels applied to nodes in Neo4j. JB. ---
**Author:** ![jesus\_barrasa](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/jesus_barrasa/32/27513_2.png) [@jesus\_barrasa](https://community.neo4j.com/u/jesus_barrasa)\ **Post date:** [March 30, 2022, 8:17am UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/5 "2022-03-30T08:17:22Z")
This is what I mean: ```auto // Import the onto call n10s.onto.import.fetch("https://url_of_your_ontology","Turtle"); // Add the extra labels call n10s.rdf.stream.fetch("https://url_of_your_ontology","Turtle") yield subject, predicate, object where predicate = "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" and object = "http://www.w3.org/2002/07/owl#Class" match (r:Resource { uri: subject }) SET r:LFCClass ``` ---
**Author:** ![siham.elfedali](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/siham.elfedali/32/3932_2.png) [@siham.elfedali](https://community.neo4j.com/u/siham.elfedali)\ **Post date:** [March 31, 2022, 9:28am UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/6 "2022-03-31T09:28:13Z")
Hello @jesus_barrasa actually I tried your suggestion, but I don't know the reason my graph is not updated, and I can't see that the labels are updated, even after executing the procedures I received just _(no changes, no records)_. By the way, when I run the procedure **CALL n10s.rdf.stream.fetch("https://url\_of\_your\_ontology","Turtle")**; I can't find any object with URL **"[http://www.w3.org/2002/07/owl#Class](http://www.w3.org/2002/07/owl#Class)"**, it is strange 😕 ---
**Author:** ![jesus\_barrasa](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/jesus_barrasa/32/27513_2.png) [@jesus\_barrasa](https://community.neo4j.com/u/jesus_barrasa)\ **Post date:** [March 31, 2022, 10:43am UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/7 "2022-03-31T10:43:13Z")
can you share the onto (or a part of it) that you're trying to load so we can try to reproduce? ---
**Author:** ![siham.elfedali](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/siham.elfedali/32/3932_2.png) [@siham.elfedali](https://community.neo4j.com/u/siham.elfedali)\ **Post date:** [March 31, 2022, 12:06pm UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/8 "2022-03-31T12:06:44Z")
Hello, this is the link of the ontology that I am using [https://standards.buildingsmart.org/IFC/DEV/IFC4\_3/RC1/OWL/IFC4x3\_RC1.ttl](https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/OWL/IFC4x3_RC1.ttl) ---
**Author:** ![jesus\_barrasa](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/jesus_barrasa/32/27513_2.png) [@jesus\_barrasa](https://community.neo4j.com/u/jesus_barrasa)\ **Post date:** [March 31, 2022, 7:32pm UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/9 "2022-03-31T19:32:09Z")
This script seems to do the job. Check it out and let us know. I use the same principle to load the owl:NamedIndividual (there's a bunch of them in your onto and they're not loaded by default by `n10s.onto.import.*` Cheers, JB ```auto CREATE CONSTRAINT n10s_unique_uri ON (r:Resource) ASSERT r.uri IS UNIQUE ; call n10s.graphconfig.init() ; call n10s.nsprefixes.addFromText(' @prefix ifc: . @prefix xsd: . @prefix owl: . @prefix rdfs: . @prefix dce: . @prefix vann: . @prefix list: . @prefix expr: . @prefix cc: . @prefix rdf: . ') ; // first pass, load the onto. Note that there are irregular uris, but we accept them with verifyUriSyntax: false call n10s.onto.import.fetch("https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/OWL/IFC4x3_RC1.ttl","Turtle", { verifyUriSyntax: false }) ; // we want named instances to link to the classes imported from the onto, so we change the handleRDFTypes mode. call n10s.graphconfig.set({handleRDFTypes: "NODES",force:true}) ; // second pass to load the owl:NamedIndividual call n10s.rdf.stream.fetch("https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/OWL/IFC4x3_RC1.ttl","Turtle", { verifyUriSyntax: false , limit :100000}) yield subject, predicate, object where predicate = "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" and object = "http://www.w3.org/2002/07/owl#NamedIndividual" with collect(subject) as namedIndividuals call n10s.rdf.stream.fetch("https://standards.buildingsmart.org/IFC/DEV/IFC4_3/RC1/OWL/IFC4x3_RC1.ttl","Turtle", { verifyUriSyntax: false , limit :100000}) yield subject, predicate, object, isLiteral, literalType, literalLang, subjectSPO where subject in namedIndividuals and not ( predicate = "http://www.w3.org/1999/02/22-rdf-syntax-ns#type" and object = "http://www.w3.org/2002/07/owl#NamedIndividual" ) with n10s.rdf.collect(subject, predicate, object, isLiteral, literalType, literalLang, subjectSPO) as individualsAsRDF call n10s.rdf.import.inline(individualsAsRDF, "N-Triples",{verifyUriSyntax: false}) yield terminationStatus,triplesLoaded, triplesParsed, namespaces, extraInfo, callParams return terminationStatus,triplesLoaded, triplesParsed, namespaces, extraInfo, callParams ; // add label to owl:NamedIndividual match (ni:Resource)-[:rdf__type]->() with distinct ni set ni:owl__NamedIndividual ; ``` ---
**Author:** ![siham.elfedali](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/siham.elfedali/32/3932_2.png) [@siham.elfedali](https://community.neo4j.com/u/siham.elfedali)\ **Post date:** [April 1, 2022, 1:01pm UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/10 "2022-04-01T13:01:36Z")
Hello @jesus_barrasa it works like a magic 😃 Thanks. ---
**Author:** ![vaddi.b](https://sea1.discourse-cdn.com/flex021/user_avatar/community.neo4j.com/vaddi.b/32/32675_2.png) [@vaddi.b](https://community.neo4j.com/u/vaddi.b)\ **Post date:** [September 12, 2024, 1:11pm UTC](https://community.neo4j.com/t/how-to-import-two-ontologies-with-two-different-labels-for-the-owl-class/54097/11 "2024-09-12T13:11:42Z")
Hello @jesus_barrasa i an new to this neosematics and i have a doubt and how can i get the class names as label names while fetching ontology. I am getting some random names instead. this is my file [https://cdn.aidtaas.com/\_91728b69-5a3d-4f19-a35b-a90adf99fc20/bottle/limka/soda/af43bab7-1362-4aff-9f70-de739f2f7e22\_$$\_V1\_People\_Example.owl](https://cdn.aidtaas.com/_91728b69-5a3d-4f19-a35b-a90adf99fc20/bottle/limka/soda/af43bab7-1362-4aff-9f70-de739f2f7e22_$$_V1_People_Example.owl)