_:b56714304	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/a8b898d446ceb1d4fdc3b31f560465eb9e2bef40/16> .
_:b56714305	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56714304	<http://www.w3.org/ns/oa#hasSelector>	_:b56714305 .
_:b56714305	<http://www.w3.org/ns/oa#exact>	"Headaches" .