_:b56489397	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56489397	<http://www.w3.org/ns/oa#exact>	"concentration" .
_:b56489396	<http://www.w3.org/ns/oa#hasSelector>	_:b56489397 .
_:b56489396	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/3d5467d7853fce9ef9948bc008aee18f526b656e/3> .