<http://ns.inria.fr/covid19/PMC6429262#body_text>	<http://purl.org/dc/terms/subject>	"Military association football clubs in North Korea" .
<http://ns.inria.fr/covid19/PMC6429262#body_text>	<http://purl.org/dc/terms/subject>	"Microsoft criticisms and controversies" .
<http://ns.inria.fr/covid19/PMC6429262#body_text>	<http://purl.org/dc/terms/subject>	"April observances" .