<http://ns.inria.fr/covid19/PMC4052367#body_text> <http://purl.org/dc/terms/subject> "Primates of Africa" . <http://ns.inria.fr/covid19/PMC4052367#body_text> <http://purl.org/dc/terms/subject> "Smallpox vaccines" . <http://ns.inria.fr/covid19/PMC4052367#body_text> <http://purl.org/dc/terms/subject> "Publicly traded companies based in New York City" .