_:b57485188	<http://www.w3.org/ns/oa#hasSelector>	_:b57485189 .
_:b57485189	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57485189	<http://www.w3.org/ns/oa#exact>	"efficacy" .
_:b57485188	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/2def385170922c5786ea00a64f0c139460d23e2c/1> .