_:b56930348	<http://www.w3.org/ns/oa#hasSelector>	_:b56930349 .
_:b56930349	<http://www.w3.org/ns/oa#exact>	"frequency" .
_:b56930349	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56930348	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/5af4f9f25a2b24b5a7d20dd3120e597b250806e7/3> .