<http://ns.inria.fr/covid19/PMC3144797#body_text>	<http://purl.org/dc/terms/subject>	"Multinational companies headquartered in the United States" .
<http://ns.inria.fr/covid19/PMC3144797#body_text>	<http://purl.org/dc/terms/subject>	"Excitatory amino acid receptor ligands" .
<http://ns.inria.fr/covid19/PMC3144797#body_text>	<http://purl.org/dc/terms/subject>	"Commercial-free television networks" .