<http://ns.inria.fr/covid19/PMC7166096#body_text>	<http://purl.org/dc/terms/subject>	"April observances" .
<http://ns.inria.fr/covid19/PMC7166096#body_text>	<http://purl.org/dc/terms/subject>	"2007 in economics" .
<http://ns.inria.fr/covid19/PMC7166096#body_text>	<http://purl.org/dc/terms/subject>	"1789 establishments in the United States" .