_:b56573561	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56573561	<http://www.w3.org/ns/oa#exact>	"frequency" .
_:b56573560	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/32b6ecf50c62b0c312394d6082c1824391f9d994/0> .
_:b56573560	<http://www.w3.org/ns/oa#hasSelector>	_:b56573561 .