_:b57314036 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/32504110f93120a08331545fa98f56f6a4bc60aa/1> . _:b57314037 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57314037 <http://www.w3.org/ns/oa#exact> "acute heart failure" . _:b57314036 <http://www.w3.org/ns/oa#hasSelector> _:b57314037 .