<http://ns.inria.fr/covid19/PMC7099209#body_text>	<http://purl.org/dc/terms/subject>	"Public holidays in the United Kingdom" .
<http://ns.inria.fr/covid19/PMC7099209#body_text>	<http://purl.org/dc/terms/subject>	"Economic globalization" .
<http://ns.inria.fr/covid19/PMC7099209#body_text>	<http://purl.org/dc/terms/subject>	"Differential equations" .