<http://ns.inria.fr/covid19/PMC7126298#body_text>	<http://purl.org/dc/terms/subject>	"American companies established in 1939" .
<http://ns.inria.fr/covid19/PMC7126298#body_text>	<http://purl.org/dc/terms/subject>	"Educational institutions established in 1999" .
<http://ns.inria.fr/covid19/PMC7126298#body_text>	<http://purl.org/dc/terms/subject>	"Independent cities in the United States" .