_:b56918889	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56918889	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b56918888	<http://www.w3.org/ns/oa#hasSelector>	_:b56918889 .
_:b56918888	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/5b5b47da22809b8c85f26dbfe9f4e7444354ed05/1> .