_:b56865732	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/250615c975f713cb3e2b09e7e9718fa2eb095a79/0> .
_:b56865732	<http://www.w3.org/ns/oa#hasSelector>	_:b56865733 .
_:b56865733	<http://www.w3.org/ns/oa#exact>	"seroprevalence" .
_:b56865733	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .