_:b57950436	<http://www.w3.org/ns/oa#hasSelector>	_:b57950437 .
_:b57950436	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/7e3cb7cbbb04793f62f0eec332101aa55c72a0dd/1> .
_:b57950437	<http://www.w3.org/ns/oa#exact>	"headache" .
_:b57950437	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .