/usr/share/tracker/ontologies/ is in tracker 0.14.0-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/tracker/ontologies/10-xsd.description
/usr/share/tracker/ontologies/10-xsd.ontology
/usr/share/tracker/ontologies/11-rdf.description
/usr/share/tracker/ontologies/11-rdf.ontology
/usr/share/tracker/ontologies/12-nrl.description
/usr/share/tracker/ontologies/12-nrl.ontology
/usr/share/tracker/ontologies/20-dc.description
/usr/share/tracker/ontologies/20-dc.ontology
/usr/share/tracker/ontologies/30-nie.description
/usr/share/tracker/ontologies/30-nie.ontology
/usr/share/tracker/ontologies/31-nao.description
/usr/share/tracker/ontologies/31-nao.ontology
/usr/share/tracker/ontologies/32-nco.description
/usr/share/tracker/ontologies/32-nco.ontology
/usr/share/tracker/ontologies/33-nfo.description
/usr/share/tracker/ontologies/33-nfo.ontology
/usr/share/tracker/ontologies/34-nmo.description
/usr/share/tracker/ontologies/34-nmo.ontology
/usr/share/tracker/ontologies/35-ncal.description
/usr/share/tracker/ontologies/35-ncal.ontology
/usr/share/tracker/ontologies/36-scal.description
/usr/share/tracker/ontologies/36-scal.ontology
/usr/share/tracker/ontologies/37-nid3.description
/usr/share/tracker/ontologies/37-nid3.ontology
/usr/share/tracker/ontologies/38-nmm.description
/usr/share/tracker/ontologies/38-nmm.ontology
/usr/share/tracker/ontologies/39-mto.description
/usr/share/tracker/ontologies/39-mto.ontology
/usr/share/tracker/ontologies/40-mlo.description
/usr/share/tracker/ontologies/40-mlo.ontology
/usr/share/tracker/ontologies/41-mfo.description
/usr/share/tracker/ontologies/41-mfo.ontology
/usr/share/tracker/ontologies/89-mtp.description
/usr/share/tracker/ontologies/89-mtp.ontology
/usr/share/tracker/ontologies/90-tracker.description
/usr/share/tracker/ontologies/90-tracker.ontology
/usr/share/tracker/ontologies/92-slo.description
/usr/share/tracker/ontologies/92-slo.ontology
/usr/share/tracker/ontologies/93-libosinfo.description
/usr/share/tracker/ontologies/93-libosinfo.ontology