_:b57084837	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57084836	<http://www.w3.org/ns/oa#hasSelector>	_:b57084837 .
_:b57084836	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/7927b8f05155e6933aaf8d9509dbd379d017dfe7/0> .
_:b57084837	<http://www.w3.org/ns/oa#exact>	"clustering" .