<http://ns.inria.fr/covid19/PMC7119980#body_text>	<http://purl.org/dc/terms/subject>	"Physical chemistry" .
<http://ns.inria.fr/covid19/PMC7119980#body_text>	<http://purl.org/dc/terms/subject>	"1917 disestablishments in Italy" .
<http://ns.inria.fr/covid19/PMC7119980#body_text>	<http://purl.org/dc/terms/subject>	"Cryogenian first appearances" .