_:b57276944	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/641ddae8963ac3177731bd9e2095837f2ace30dd/0> .
_:b57276944	<http://www.w3.org/ns/oa#hasSelector>	_:b57276945 .
_:b57276945	<http://www.w3.org/ns/oa#exact>	"concentration" .
_:b57276945	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .