<http://ns.inria.fr/covid19/PMC4374968#body_text>	<http://purl.org/dc/terms/subject>	"Historical regions" .
<http://ns.inria.fr/covid19/PMC4374968#body_text>	<http://purl.org/dc/terms/subject>	"Cities in Iraq" .
<http://ns.inria.fr/covid19/PMC4374968#body_text>	<http://purl.org/dc/terms/subject>	"Philosophical theories" .