_:b56415613	<http://www.w3.org/ns/oa#exact>	"concentration" .
_:b56415612	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/8db2b8c1236bfb85a942a1e45c3c634ad937f34b/2> .
_:b56415612	<http://www.w3.org/ns/oa#hasSelector>	_:b56415613 .
_:b56415613	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .