_:b56822112	<http://www.w3.org/ns/oa#hasSelector>	_:b56822113 .
_:b56822113	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56822113	<http://www.w3.org/ns/oa#exact>	"frequency" .
_:b56822112	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/826c8c181124425f00147514506ebb207092360b/0> .