_:b57023533	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57023532	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/ba139493dfc91d8e847d162613747f40950add89/0> .
_:b57023532	<http://www.w3.org/ns/oa#hasSelector>	_:b57023533 .
_:b57023533	<http://www.w3.org/ns/oa#exact>	"headache" .