<http://ns.inria.fr/covid19/PMC7114872#title>	<http://purl.org/dc/terms/subject>	"Flora of North America" .
<http://ns.inria.fr/covid19/PMC7114872#title>	<http://purl.org/dc/terms/subject>	"Primary alcohols" .
<http://ns.inria.fr/covid19/PMC7114872#title>	<http://purl.org/dc/terms/subject>	"Butterfly food plants" .