<http://ns.inria.fr/covid19/PMC7126612#body_text>	<http://purl.org/dc/terms/subject>	"Reservoir rock formations" .
<http://ns.inria.fr/covid19/PMC7126612#body_text>	<http://purl.org/dc/terms/subject>	"Educational software" .
<http://ns.inria.fr/covid19/PMC7126612#body_text>	<http://purl.org/dc/terms/subject>	"Social groups" .