_:b57901972 <http://www.w3.org/ns/oa#hasSelector> _:b57901973 . _:b57901973 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57901973 <http://www.w3.org/ns/oa#exact> "appearance" . _:b57901972 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/c871426a9510b3c5e97fd66a5b634de035db84a9/1> .