<http://ns.inria.fr/covid19/PMC7309693#body_text> <http://purl.org/dc/terms/subject> "1905 establishments in Canada" . <http://ns.inria.fr/covid19/PMC7309693#body_text> <http://purl.org/dc/terms/subject> "Medical tests" . <http://ns.inria.fr/covid19/PMC7309693#body_text> <http://purl.org/dc/terms/subject> "Monte Carlo" .