_:b56540176	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/45b1e9bff6280c3c485670213d0072561fb3434e/0> .
_:b56540177	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56540176	<http://www.w3.org/ns/oa#hasSelector>	_:b56540177 .
_:b56540177	<http://www.w3.org/ns/oa#exact>	"efficiency" .