_:b56401896	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/c3e25d0cb02656c82dfac2860225f14588489066/2> .
_:b56401896	<http://www.w3.org/ns/oa#hasSelector>	_:b56401897 .
_:b56401897	<http://www.w3.org/ns/oa#exact>	"frequency" .
_:b56401897	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .