_:b57501820	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/a9cab864aceb9a873c6a049a8d7951ac80d993d8/0> .
_:b57501821	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57501821	<http://www.w3.org/ns/oa#exact>	"characteristics" .
_:b57501820	<http://www.w3.org/ns/oa#hasSelector>	_:b57501821 .