_:b57189449 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57189449 <http://www.w3.org/ns/oa#exact> "occurrence" . _:b57189448 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/ea0708422bc00075218004425460298c0a1543c2/2> . _:b57189448 <http://www.w3.org/ns/oa#hasSelector> _:b57189449 .