_:b57947400	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/9845bc68cd21cd2aac1db613d18336cab2420409/1> .
_:b57947401	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57947400	<http://www.w3.org/ns/oa#hasSelector>	_:b57947401 .
_:b57947401	<http://www.w3.org/ns/oa#exact>	"prevalence" .