<http://ns.inria.fr/covid19/PMC7115620#body_text>	<http://purl.org/dc/terms/subject>	"Quadrennial sporting events" .
<http://ns.inria.fr/covid19/PMC7115620#body_text>	<http://purl.org/dc/terms/subject>	"Types of tourism" .
<http://ns.inria.fr/covid19/PMC7115620#body_text>	<http://purl.org/dc/terms/subject>	"Military awards and decorations of the United Kingdom" .