_:b56934236	<http://www.w3.org/ns/oa#hasSelector>	_:b56934237 .
_:b56934237	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56934236	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/64a0b8711c7e7553c8025dc56a843ce601fc029b/0> .
_:b56934237	<http://www.w3.org/ns/oa#exact>	"headache" .