_:b56661685	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56661684	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/21d1eee76523a3642c05d99d2be8c008293d4f2d/6> .
_:b56661684	<http://www.w3.org/ns/oa#hasSelector>	_:b56661685 .
_:b56661685	<http://www.w3.org/ns/oa#exact>	"concentration" .