_:b57477876	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/b419ea900da16b40a8ae3316c9828371607c3c4f/0> .
_:b57477877	<http://www.w3.org/ns/oa#exact>	"maternal" .
_:b57477876	<http://www.w3.org/ns/oa#hasSelector>	_:b57477877 .
_:b57477877	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .