_:b56463137	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56463137	<http://www.w3.org/ns/oa#exact>	"frequency" .
_:b56463136	<http://www.w3.org/ns/oa#hasSelector>	_:b56463137 .
_:b56463136	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/ff4cb603b1cf990a4f0e76c8378884bd3edd9b75/3> .