_:b57571761	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57571760	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/e6a9266f1f45099b19b5c4f3a4cf62de41786e54/0> .
_:b57571760	<http://www.w3.org/ns/oa#hasSelector>	_:b57571761 .
_:b57571761	<http://www.w3.org/ns/oa#exact>	"seroconversion" .