Import of ChEBI.owl seems not correct

Neo4j Graph Platform
1

Hi,

I downloaded ChEBI.owl from:

curl -O https://ftp.ebi.ac.uk/pub/databases/chebi/ontology/chebi.owl

Then I used neosemantics jar from neo4j-labs neosemantics/releases github page for neo4j 5.20.0.

to import it into neo4j. I started it as 'neo4j start' on Windows 11 in command prompt. It seems to successfully import the file with

CALL n10s.rdf.import.fetch("file:///C:/.../chebi.owl", "RDF/XML");

but the relationships that I see imported seem missing/incorrect. The ChEBI ontology can be inspected here:

What I see for instance is that there are no :ChEBI node labels (or others that are supposed to be there), no :has_role relationships. I asked ChEBI website support regarding that and they say that they do have all the relationships in the .owl file and I do see them in the .owl file when I directly inspect it. So, I suspect its smth wrong with the neosemantics jar itself/neo4j. Are there any other ways besides neosemantics jar that I could use to import the .owl into neo4j database? What could be going wrong here?

2

I found that has role relationships are encoded as nodes with the label owl__ObjectProperty. I tried then to write a query to utilize them to still walk over has role relationship, just in a different way given the imported graph:

MATCH (r:owl__Restriction)-[:owl__onProperty]->(n:owl__ObjectProperty {rdfs__label: 'has role'})
MATCH (r)-[:owl__someValuesFrom]->(c:owl__Class {rdfs__label: 'sedative'})
MATCH (c2)-[:rdfs__subClassOf]->(r:owl__Restriction)
RETURN c2

It seems to be working fine when I check ChEBI website search.