_:b57838481	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57838481	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57838480	<http://www.w3.org/ns/oa#hasSelector>	_:b57838481 .
_:b57838480	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/10929289817f26ae79cf90a7538e4309f799c1d5/2> .