<http://ns.inria.fr/covid19/PMC7319956#body_text>	<http://purl.org/dc/terms/subject>	"Metal-organic frameworks" .
<http://ns.inria.fr/covid19/PMC7319956#body_text>	<http://purl.org/dc/terms/subject>	"Physical chemistry" .
<http://ns.inria.fr/covid19/PMC7319956#body_text>	<http://purl.org/dc/terms/subject>	"Natural hazards" .