_:b56687436	<http://www.w3.org/ns/oa#hasSelector>	_:b56687437 .
_:b56687437	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56687437	<http://www.w3.org/ns/oa#exact>	"maternal" .
_:b56687436	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/4afc8775d2611c00ed3ea0774df2cda79101d3ca/0> .