_:b57558956 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/3e71eb5bd4ccf675b2e597b29ce4c676e7fbd949/2> . _:b57558957 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57558956 <http://www.w3.org/ns/oa#hasSelector> _:b57558957 . _:b57558957 <http://www.w3.org/ns/oa#exact> "pneumonia" .