_:b56823892	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/51f9ab9c7010dae7a662a33f0fd32e91a2001523/3> .
_:b56823893	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56823893	<http://www.w3.org/ns/oa#exact>	"Seroprevalence" .
_:b56823892	<http://www.w3.org/ns/oa#hasSelector>	_:b56823893 .