<http://ns.inria.fr/covid19/PMC7204764#body_text>	<http://purl.org/dc/terms/subject>	"Differential equations" .
<http://ns.inria.fr/covid19/PMC7204764#body_text>	<http://purl.org/dc/terms/subject>	"February 2020 events in China" .
<http://ns.inria.fr/covid19/PMC7204764#body_text>	<http://purl.org/dc/terms/subject>	"G20 nations" .