_:b57259289 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57259288 <http://www.w3.org/ns/oa#hasSelector> _:b57259289 . _:b57259289 <http://www.w3.org/ns/oa#exact> "occurrence" . _:b57259288 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/8dc942b1e699c1f3538b2e4a6a8df723b8dc2486/3> .