<http://ns.inria.fr/covid19/PMC6749104#body_text>	<http://purl.org/dc/terms/subject>	"Public services of the United States" .
<http://ns.inria.fr/covid19/PMC6749104#body_text>	<http://purl.org/dc/terms/subject>	"Primary care" .
<http://ns.inria.fr/covid19/PMC6749104#body_text>	<http://purl.org/dc/terms/subject>	"Lists of countries" .