Man pages matching name catmandu::rdf in section 3pm:

Catmandu::RDF.3pm.en	debian 10 / libcatmandu-rdf-perl
Catmandu::RDF.3pm.en	debian 11 / libcatmandu-rdf-perl
Catmandu::RDF.3pm.en	debian 12 / libcatmandu-rdf-perl