<http://ns.inria.fr/covid19/PMC7176041#body_text>	<http://purl.org/dc/terms/subject>	"Research and development in the United States" .
<http://ns.inria.fr/covid19/PMC7176041#body_text>	<http://purl.org/dc/terms/subject>	"Numerical software" .
<http://ns.inria.fr/covid19/PMC7176041#body_text>	<http://purl.org/dc/terms/subject>	"Network theory" .