<http://ns.inria.fr/covid19/PMC3266233#body_text>	<http://purl.org/dc/terms/subject>	"Bacterial toxins" .
<http://ns.inria.fr/covid19/PMC3266233#body_text>	<http://purl.org/dc/terms/subject>	"Football clubs in El Salvador" .
<http://ns.inria.fr/covid19/PMC3266233#body_text>	<http://purl.org/dc/terms/subject>	"Genealogy websites" .