<http://ns.inria.fr/covid19/PMC4564540#body_text>	<http://purl.org/dc/terms/subject>	"Indoles" .
<http://ns.inria.fr/covid19/PMC4564540#body_text>	<http://purl.org/dc/terms/subject>	"2014 mergers and acquisitions" .
<http://ns.inria.fr/covid19/PMC4564540#body_text>	<http://purl.org/dc/terms/subject>	"Smallpox vaccines" .