_:b57409716	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/a8b898d446ceb1d4fdc3b31f560465eb9e2bef40/16> .
_:b57409717	<http://www.w3.org/ns/oa#exact>	"Headaches" .
_:b57409717	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57409716	<http://www.w3.org/ns/oa#hasSelector>	_:b57409717 .