<http://ns.inria.fr/covid19/PMC2944079#body_text>	<http://purl.org/dc/terms/subject>	"Space imagers" .
<http://ns.inria.fr/covid19/PMC2944079#body_text>	<http://purl.org/dc/terms/subject>	"Physical chemistry" .
<http://ns.inria.fr/covid19/PMC2944079#body_text>	<http://purl.org/dc/terms/subject>	"G20 nations" .