<http://ns.inria.fr/covid19/PMC7424612#body_text> <http://purl.org/dc/terms/subject> "States and territories established in 1889" . <http://ns.inria.fr/covid19/PMC7424612#body_text> <http://purl.org/dc/terms/subject> "Technology companies based in the San Francisco Bay Area" . <http://ns.inria.fr/covid19/PMC7424612#body_text> <http://purl.org/dc/terms/subject> "Global Positioning System" .