<http://ns.inria.fr/covid19/PMC7153961#title>	<http://purl.org/dc/terms/subject>	"Southern European countries" .
<http://ns.inria.fr/covid19/PMC7153961#title>	<http://purl.org/dc/terms/subject>	"Spanish-speaking countries and territories" .
<http://ns.inria.fr/covid19/PMC7153961#title>	<http://purl.org/dc/terms/subject>	"Countries in Europe" .