<http://ns.inria.fr/covid19/PMC7434626#body_text>	<http://purl.org/dc/terms/subject>	"People from the Province of Valladolid" .
<http://ns.inria.fr/covid19/PMC7434626#body_text>	<http://purl.org/dc/terms/subject>	"Numerical software" .
<http://ns.inria.fr/covid19/PMC7434626#body_text>	<http://purl.org/dc/terms/subject>	"Differential equations" .