<http://ns.inria.fr/covid19/PMC7314703#body_text>	<http://purl.org/dc/terms/subject>	"Graph theory" .
<http://ns.inria.fr/covid19/PMC7314703#body_text>	<http://purl.org/dc/terms/subject>	"Automata (computation)" .
<http://ns.inria.fr/covid19/PMC7314703#body_text>	<http://purl.org/dc/terms/subject>	"Software quality" .
<http://ns.inria.fr/covid19/PMC7314703#body_text>	<http://purl.org/dc/terms/subject>	"Port cities and towns in Germany" .