_:b56408300	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/025ed2caa0ae1ab7f04d3479116e6ed2a334938d/0> .
_:b56408301	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56408301	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b56408300	<http://www.w3.org/ns/oa#hasSelector>	_:b56408301 .