<http://ns.inria.fr/covid19/PMC7110924#body_text>	<http://purl.org/dc/terms/subject>	"Differential equations" .
<http://ns.inria.fr/covid19/PMC7110924#body_text>	<http://purl.org/dc/terms/subject>	"2014 health disasters" .
<http://ns.inria.fr/covid19/PMC7110924#body_text>	<http://purl.org/dc/terms/subject>	"Hydraulic engineering" .