_:b57076105	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57076104	<http://www.w3.org/ns/oa#hasSelector>	_:b57076105 .
_:b57076105	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57076104	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/7161522ddfb7d0ae8980540ac960978af964d828/0> .