_:b57996072	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/3400329249fd99f6ef268f2dce535ed20330f627/1> .
_:b57996072	<http://www.w3.org/ns/oa#hasSelector>	_:b57996073 .
_:b57996073	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57996073	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .