<http://ns.inria.fr/covid19/PMC7150310#body_text>	<http://purl.org/dc/terms/subject>	"English letter writers" .
<http://ns.inria.fr/covid19/PMC7150310#body_text>	<http://purl.org/dc/terms/subject>	"Laboratories" .
<http://ns.inria.fr/covid19/PMC7150310#body_text>	<http://purl.org/dc/terms/subject>	"Scientific instrument makers" .