_:b57742873	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57742873	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57742872	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/10096cf5f6a86de9362a5085c2c9c9d1e65c007b/1> .
_:b57742872	<http://www.w3.org/ns/oa#hasSelector>	_:b57742873 .