_:b57772468	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/391bd06ed4a48eddab1e7bcc5d97bbfbdad15788/0> .
_:b57772469	<http://www.w3.org/ns/oa#exact>	"concentration" .
_:b57772468	<http://www.w3.org/ns/oa#hasSelector>	_:b57772469 .
_:b57772469	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .