<http://ns.inria.fr/covid19/PMC7235566#body_text>	<http://purl.org/dc/terms/subject>	"Centers for Disease Control and Prevention" .
<http://ns.inria.fr/covid19/PMC7235566#body_text>	<http://purl.org/dc/terms/subject>	"Populated places established in 1898" .
<http://ns.inria.fr/covid19/PMC7235566#body_text>	<http://purl.org/dc/terms/subject>	"Clinical research" .