<http://ns.inria.fr/covid19/PMC5473748#body_text>	<http://purl.org/dc/terms/subject>	"Unicode" .
<http://ns.inria.fr/covid19/PMC5473748#body_text>	<http://purl.org/dc/terms/subject>	"American companies established in 1943" .
<http://ns.inria.fr/covid19/PMC5473748#body_text>	<http://purl.org/dc/terms/subject>	"Smallpox vaccines" .