_:b56591240	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/40e2c8802073af98c814a8cad3a035961da7ccb5/19> .
_:b56591241	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56591240	<http://www.w3.org/ns/oa#hasSelector>	_:b56591241 .
_:b56591241	<http://www.w3.org/ns/oa#exact>	"frequency" .