_:b57844904 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/9cdbf5aaebee9f6b33cb9fbbdcd1a68d53727289/2> . _:b57844905 <http://www.w3.org/ns/oa#exact> "markers" . _:b57844904 <http://www.w3.org/ns/oa#hasSelector> _:b57844905 . _:b57844905 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> .