_:b57967421	<http://www.w3.org/ns/oa#exact>	"disease duration" .
_:b57967420	<http://www.w3.org/ns/oa#hasSource>	<http://ns.inria.fr/covid19/arg/013d4e86b5818d68f587445e98aa6b0371be715f/0> .
_:b57967421	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/oa#TextQuoteSelector> .
_:b57967420	<http://www.w3.org/ns/oa#hasSelector>	_:b57967421 .