<http://ns.inria.fr/covid19/PMC7223715#body_text>	<http://purl.org/dc/terms/subject>	"Tourist attractions in Moscow" .
<http://ns.inria.fr/covid19/PMC7223715#body_text>	<http://purl.org/dc/terms/subject>	"Smallpox vaccines" .
<http://ns.inria.fr/covid19/PMC7223715#body_text>	<http://purl.org/dc/terms/subject>	"Football clubs in El Salvador" .