_:b57174025 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57174025 <http://www.w3.org/ns/oa#exact> "severe" . _:b57174024 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/ac6bd522d6d120b2478ef55e4ecebc5f7269f4e7/0> . _:b57174024 <http://www.w3.org/ns/oa#hasSelector> _:b57174025 .