_:b56573297	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56573297	<http://www.w3.org/ns/oa#exact>	"frequency" .
_:b56573296	<http://www.w3.org/ns/oa#hasSelector>	_:b56573297 .
_:b56573296	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/efc279218652f757e013406427eb8fff6bfe3eb8/3> .