_:b57231548	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/b6960070c31ff520a6e4771ea9eff55302b5680f/3> .
_:b57231548	<http://www.w3.org/ns/oa#hasSelector>	_:b57231549 .
_:b57231549	<http://www.w3.org/ns/oa#exact>	"activity" .
_:b57231549	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .