_:b57396513 <http://www.w3.org/ns/oa#exact> "Mortality" . _:b57396512 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/262f4ec7b65be8279dc5b6eb4d160647ed42f574/1> . _:b57396513 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57396512 <http://www.w3.org/ns/oa#hasSelector> _:b57396513 .