_:b57923173	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57923172	<http://www.w3.org/ns/oa#hasSelector>	_:b57923173 .
_:b57923173	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57923172	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/760fa9225c5f571c77674f53a1f2d9648eb2adb0/1> .