_:b57695021	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57695020	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/abb2a92fe176ca007e19c2d2ba2dffdbb4cc0908/1> .
_:b57695020	<http://www.w3.org/ns/oa#hasSelector>	_:b57695021 .
_:b57695021	<http://www.w3.org/ns/oa#exact>	"frequency" .