_:b57957720	<http://www.w3.org/ns/oa#hasSelector>	_:b57957721 .
_:b57957721	<http://www.w3.org/ns/oa#exact>	"concentration" .
_:b57957721	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57957720	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/c9c34b0ef9eacdf1bce00a71e1ff612479c3f004/0> .