_:b57161580	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/188a2e1351ceae0aa8347e1a1d7af1e3b7b66a02/0> .
_:b57161581	<http://www.w3.org/ns/oa#exact>	"headache" .
_:b57161580	<http://www.w3.org/ns/oa#hasSelector>	_:b57161581 .
_:b57161581	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .