<http://ns.inria.fr/covid19/PMC6614441#body_text>	<http://purl.org/dc/terms/subject>	"Historical regions" .
<http://ns.inria.fr/covid19/PMC6614441#body_text>	<http://purl.org/dc/terms/subject>	"Bioenergy" .
<http://ns.inria.fr/covid19/PMC6614441#body_text>	<http://purl.org/dc/terms/subject>	"Cryogenian first appearances" .