_:b57306381	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57306381	<http://www.w3.org/ns/oa#exact>	"concentration" .
_:b57306380	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/e2de7af2f055e3cf79556848d5b6aa2d27c4b97d/0> .
_:b57306380	<http://www.w3.org/ns/oa#hasSelector>	_:b57306381 .