<http://ns.inria.fr/covid19/PMC7121080#body_text>	<http://purl.org/dc/terms/subject>	"Smallpox vaccines" .
<http://ns.inria.fr/covid19/PMC7121080#body_text>	<http://purl.org/dc/terms/subject>	"Physical chemistry" .
<http://ns.inria.fr/covid19/PMC7121080#body_text>	<http://purl.org/dc/terms/subject>	"F91 Dudelange players" .