<http://ns.inria.fr/covid19/PMC7308583#title>	<http://purl.org/dc/terms/subject>	"Treaties of Vietnam" .
<http://ns.inria.fr/covid19/PMC7308583#title>	<http://purl.org/dc/terms/subject>	"Treaties of Albania" .
<http://ns.inria.fr/covid19/PMC7308583#title>	<http://purl.org/dc/terms/subject>	"Treaties of Germany" .