_:b57802317	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57802317	<http://www.w3.org/ns/oa#exact>	"frequencies" .
_:b57802316	<http://www.w3.org/ns/oa#hasSelector>	_:b57802317 .
_:b57802316	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/3fdc7c236b854cbc809e10b2cc1628102f5c7e6c/0> .