_:b57233152	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/042298e80948b1be8323bb04441dabefea9fc7ab/0> .
_:b57233153	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57233153	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57233152	<http://www.w3.org/ns/oa#hasSelector>	_:b57233153 .