_:b57311784	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/a6e04aa554e60c11c91aee692cd1f4ab31432455/1> .
_:b57311785	<http://www.w3.org/ns/oa#exact>	"maternal" .
_:b57311785	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57311784	<http://www.w3.org/ns/oa#hasSelector>	_:b57311785 .