<http://ns.inria.fr/covid19/PMC5904412#body_text>	<http://purl.org/dc/terms/subject>	"Kamen Rider television series" .
<http://ns.inria.fr/covid19/PMC5904412#body_text>	<http://purl.org/dc/terms/subject>	"Abdominal pain" .
<http://ns.inria.fr/covid19/PMC5904412#body_text>	<http://purl.org/dc/terms/subject>	"Smallpox vaccines" .