_:b56377221 <http://www.w3.org/ns/oa#exact> "18h" . _:b56377220 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/93f16edcda47604faa4322397e60ad2185c389a8/3> . _:b56377220 <http://www.w3.org/ns/oa#hasSelector> _:b56377221 . _:b56377221 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> .