_:b57068120	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/2782e0d4147b59228cff660820bf0b65c3417187/2> .
_:b57068120	<http://www.w3.org/ns/oa#hasSelector>	_:b57068121 .
_:b57068121	<http://www.w3.org/ns/oa#exact>	"efficient" .
_:b57068121	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .