_:b57341473	<http://www.w3.org/ns/oa#exact>	"concentration" .
_:b57341472	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/7cfa8fb9b1e09084cbc9e3a56092c6015704995e/2> .
_:b57341473	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57341472	<http://www.w3.org/ns/oa#hasSelector>	_:b57341473 .