_:b56638309 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b56638308 <http://www.w3.org/ns/oa#hasSelector> _:b56638309 . _:b56638309 <http://www.w3.org/ns/oa#exact> "survival" . _:b56638308 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/4de66808e17dc7e6b9b5830eb1c6391af86aa4c3/1> .