<http://ns.inria.fr/covid19/PMC7106025#body_text>	<http://purl.org/dc/terms/subject>	"Smallpox vaccines" .
<http://ns.inria.fr/covid19/PMC7106025#body_text>	<http://purl.org/dc/terms/subject>	"Intravenous fluids" .
<http://ns.inria.fr/covid19/PMC7106025#body_text>	<http://purl.org/dc/terms/subject>	"Association football clubs established in 1923" .