<http://ns.inria.fr/covid19/PMC7148032#body_text>	<http://purl.org/dc/terms/subject>	"Kamen Rider television series" .
<http://ns.inria.fr/covid19/PMC7148032#body_text>	<http://purl.org/dc/terms/subject>	"Variants of random walks" .
<http://ns.inria.fr/covid19/PMC7148032#body_text>	<http://purl.org/dc/terms/subject>	"Problem solving methods" .