_:b56451717	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56451716	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/4b166e095e40c4d3a618d678b66117a312c8861d/1> .
_:b56451716	<http://www.w3.org/ns/oa#hasSelector>	_:b56451717 .
_:b56451717	<http://www.w3.org/ns/oa#exact>	"heart failure" .