<http://ns.inria.fr/covid19/PMC7255137#body_text>	<http://purl.org/dc/terms/subject>	"Multinational companies headquartered in the United States" .
<http://ns.inria.fr/covid19/PMC7255137#body_text>	<http://purl.org/dc/terms/subject>	"Tomography" .
<http://ns.inria.fr/covid19/PMC7255137#body_text>	<http://purl.org/dc/terms/subject>	"Southern European countries" .