_:b57228281	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57228280	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/b48c350f6d3b7087b3260e04b26f8db5ca3bc214/0> .
_:b57228281	<http://www.w3.org/ns/oa#exact>	"maternal" .
_:b57228280	<http://www.w3.org/ns/oa#hasSelector>	_:b57228281 .