_:b56488132 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/228d198944088138adf063f7a17c3a55f47bbb39/2> . _:b56488132 <http://www.w3.org/ns/oa#hasSelector> _:b56488133 . _:b56488133 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b56488133 <http://www.w3.org/ns/oa#exact> "severity" .