_:b57910416	<http://www.w3.org/ns/oa#hasSelector>	_:b57910417 .
_:b57910417	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57910417	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57910416	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/522dda105ddfa3929708b88ea64997545fe10208/3> .