_:b57118172	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/c0afcaab27d3532f3396316eb529468097bd6de7/1> .
_:b57118173	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57118172	<http://www.w3.org/ns/oa#hasSelector>	_:b57118173 .
_:b57118173	<http://www.w3.org/ns/oa#exact>	"cell frequencies" .