<http://ns.inria.fr/covid19/PMC7250600#body_text>	<http://purl.org/dc/terms/subject>	"2000 albums" .
<http://ns.inria.fr/covid19/PMC7250600#body_text>	<http://purl.org/dc/terms/subject>	"Applications of cryptography" .
<http://ns.inria.fr/covid19/PMC7250600#body_text>	<http://purl.org/dc/terms/subject>	"Formal systems" .