<http://ns.inria.fr/covid19/PMC7448763#title>	<http://purl.org/dc/terms/subject>	"Member states of Mercosur" .
<http://ns.inria.fr/covid19/PMC7448763#title>	<http://purl.org/dc/terms/subject>	"Brazil" .
<http://ns.inria.fr/covid19/PMC7448763#title>	<http://purl.org/dc/terms/subject>	"BRICS nations" .