_:b56581720	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/e365450800b8ba443821448827600480868e6295/2> .
_:b56581721	<http://www.w3.org/ns/oa#exact>	"preoperative" .
_:b56581721	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56581720	<http://www.w3.org/ns/oa#hasSelector>	_:b56581721 .