<http://ns.inria.fr/covid19/PMC7148208#body_text>	<http://purl.org/dc/terms/subject>	"Data mining" .
<http://ns.inria.fr/covid19/PMC7148208#body_text>	<http://purl.org/dc/terms/subject>	"Network theory" .
<http://ns.inria.fr/covid19/PMC7148208#body_text>	<http://purl.org/dc/terms/subject>	"1789 establishments in the United States" .
<http://ns.inria.fr/covid19/PMC7148208#body_text>	<http://purl.org/dc/terms/subject>	"Machine learning" .