_:b56879061 <http://www.w3.org/ns/oa#exact> "severe" . _:b56879061 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b56879060 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/51cf9ebc7013181dd70887d1e01db7dcd6e19483/0> . _:b56879060 <http://www.w3.org/ns/oa#hasSelector> _:b56879061 .