<http://ns.inria.fr/covid19/PMC7431966#body_text>	<http://purl.org/dc/terms/subject>	"Smallpox vaccines" .
<http://ns.inria.fr/covid19/PMC7431966#body_text>	<http://purl.org/dc/terms/subject>	"Non-profit organisations based in Norway" .
<http://ns.inria.fr/covid19/PMC7431966#body_text>	<http://purl.org/dc/terms/subject>	"Companies listed on the Stockholm Stock Exchange" .