_:b57976173 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57976172 <http://www.w3.org/ns/oa#hasSelector> _:b57976173 . _:b57976172 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/e2149d1c247ef118df46869e0e8822198f10ad23/2> . _:b57976173 <http://www.w3.org/ns/oa#exact> "radiographic" .