_:b56541860	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/4cfcae18bbe5c7e6f03190f22a3b3b4f7e78a0c9/0> .
_:b56541860	<http://www.w3.org/ns/oa#hasSelector>	_:b56541861 .
_:b56541861	<http://www.w3.org/ns/oa#exact>	"density" .
_:b56541861	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .