<http://ns.inria.fr/covid19/PMC6086854#title>	<http://purl.org/dc/terms/subject>	"Philosophy of life" .
<http://ns.inria.fr/covid19/PMC6086854#title>	<http://purl.org/dc/terms/subject>	"Positive mental attitude" .
<http://ns.inria.fr/covid19/PMC6086854#title>	<http://purl.org/dc/terms/subject>	"Simple living" .