_:b57519012	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/b70a7f9ce81a1b8721bc17273cd01674e574f56e/5> .
_:b57519012	<http://www.w3.org/ns/oa#hasSelector>	_:b57519013 .
_:b57519013	<http://www.w3.org/ns/oa#exact>	"activity" .
_:b57519013	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .