_:b57958388	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/e2c84dba3a140f5acfab971b1eec78634168cca0/0> .
_:b57958388	<http://www.w3.org/ns/oa#hasSelector>	_:b57958389 .
_:b57958389	<http://www.w3.org/ns/oa#exact>	"sleep quality" .
_:b57958389	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .