_:b56844937	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56844937	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b56844936	<http://www.w3.org/ns/oa#hasSelector>	_:b56844937 .
_:b56844936	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/31a1d28e9d3bf612e830b2d5c3cbd5ec17d729ca/0> .