<http://ns.inria.fr/covid19/PMC6447186#title>	<http://purl.org/dc/terms/subject>	"Evaluation methods" .
<http://ns.inria.fr/covid19/PMC6447186#title>	<http://purl.org/dc/terms/subject>	"Kenya" .
<http://ns.inria.fr/covid19/PMC6447186#title>	<http://purl.org/dc/terms/subject>	"Global Positioning System" .