<http://ns.inria.fr/covid19/PMC7243228#body_text>	<http://purl.org/dc/terms/subject>	"6th-century establishments in England" .
<http://ns.inria.fr/covid19/PMC7243228#body_text>	<http://purl.org/dc/terms/subject>	"Surgical specialties" .
<http://ns.inria.fr/covid19/PMC7243228#body_text>	<http://purl.org/dc/terms/subject>	"Portable computers" .