_:b57974928	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/f407fa076e02563e41223d43873e7fd604bdd637/3> .
_:b57974929	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57974928	<http://www.w3.org/ns/oa#hasSelector>	_:b57974929 .
_:b57974929	<http://www.w3.org/ns/oa#exact>	"seropositivity" .