_:b57533428	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/9d7899c1294d928e2db603c2aeb771340f7151b3/1> .
_:b57533428	<http://www.w3.org/ns/oa#hasSelector>	_:b57533429 .
_:b57533429	<http://www.w3.org/ns/oa#exact>	"concentrations" .
_:b57533429	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .