_:b57588060	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/00976e53faeb53b38f9eed19aee61cd1aec302a7/0> .
_:b57588060	<http://www.w3.org/ns/oa#hasSelector>	_:b57588061 .
_:b57588061	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57588061	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .