_:b56449608	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/b4cf5cba81dac5d3cf0683d83b056c1a4a0d04e1/2> .
_:b56449609	<http://www.w3.org/ns/oa#exact>	"seropositivity" .
_:b56449608	<http://www.w3.org/ns/oa#hasSelector>	_:b56449609 .
_:b56449609	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .