_:b57725633	<http://www.w3.org/ns/oa#exact>	"seroprevalence" .
_:b57725633	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57725632	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/a831b8d089ccaa7c841502b89353ddc8fcef8fb8/2> .
_:b57725632	<http://www.w3.org/ns/oa#hasSelector>	_:b57725633 .