_:b56521572	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/726d2a800d647df7d36c8395fafff53fc2ed169a/2> .
_:b56521572	<http://www.w3.org/ns/oa#hasSelector>	_:b56521573 .
_:b56521573	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b56521573	<http://www.w3.org/ns/oa#exact>	"concentration" .