_:b57271436	<http://www.w3.org/ns/oa#hasSelector>	_:b57271437 .
_:b57271437	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57271437	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57271437	<http://www.w3.org/ns/oa#exact>	"concentration" .
_:b57271436	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/7914e27a08f6ae8eb1b96279af0db6da1da8e517/1> .