_:b56684272	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/feee8995ab48eb1c0433b5d63794df24e8a71139/4> .
_:b56684272	<http://www.w3.org/ns/oa#hasSelector>	_:b56684273 .
_:b56684273	<http://www.w3.org/ns/oa#exact>	"sleep quality" .
_:b56684273	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .