<http://ns.inria.fr/covid19/PMC7420877#body_text>	<http://purl.org/dc/terms/subject>	"Horticultural techniques" .
<http://ns.inria.fr/covid19/PMC7420877#body_text>	<http://purl.org/dc/terms/subject>	"1834 in science" .
<http://ns.inria.fr/covid19/PMC7420877#body_text>	<http://purl.org/dc/terms/subject>	"Historical regions" .
<http://ns.inria.fr/covid19/PMC7420877#body_text>	<http://purl.org/dc/terms/subject>	"Molecular biology" .