_:b56847781	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56847780	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/6691e80554ffcc290cf34d96a115600634774d20/0> .
_:b56847781	<http://www.w3.org/ns/oa#exact>	"frequency pure" .
_:b56847780	<http://www.w3.org/ns/oa#hasSelector>	_:b56847781 .