_:b57068004	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/15ef80e5c5a736ab6234ac18fd8d2798befcabf8/0> .
_:b57068005	<http://www.w3.org/ns/oa#exact>	"headache" .
_:b57068004	<http://www.w3.org/ns/oa#hasSelector>	_:b57068005 .
_:b57068005	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .