<http://ns.inria.fr/covid19/PMC4217190#body_text>	<http://purl.org/dc/terms/subject>	"Silicon Valley" .
<http://ns.inria.fr/covid19/PMC4217190#body_text>	<http://purl.org/dc/terms/subject>	"Cat types" .
<http://ns.inria.fr/covid19/PMC4217190#body_text>	<http://purl.org/dc/terms/subject>	"2007 in economics" .
<http://ns.inria.fr/covid19/PMC4217190#body_text>	<http://purl.org/dc/terms/subject>	"Trade unions" .