<http://ns.inria.fr/covid19/PMC7094252#body_text>	<http://purl.org/dc/terms/subject>	"Erbium" .
<http://ns.inria.fr/covid19/PMC7094252#body_text>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://ns.inria.fr/covid19/DocumentBody> .
<http://ns.inria.fr/covid19/PMC7094252#body_text>	<http://purl.org/dc/terms/subject>	"Physical chemistry" .
<http://ns.inria.fr/covid19/PMC7094252#body_text>	<http://purl.org/dc/terms/subject>	"1834 in science" .
<http://ns.inria.fr/covid19/PMC7094252#body_text>	<http://purl.org/vocab/frbr/core#partOf>	<http://ns.inria.fr/covid19/PMC7094252> .