_:b57505836	<http://www.w3.org/ns/oa#hasSelector>	_:b57505837 .
_:b57505837	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57505837	<http://www.w3.org/ns/oa#exact>	"activity" .
_:b57505836	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/432f684fc8610e68154ea21a86387c4f9ec80cf5/1> .