Man pages matching name bio::ontology::ontology in section 3pm:

Bio::Ontology::Ontology.3pm.en	debian 10 / libbio-perl-perl
Bio::Ontology::Ontology.3pm.en	debian 11 / libbio-perl-perl
Bio::Ontology::Ontology.3pm.en	debian 12 / libbio-perl-perl