_:b56629408 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/266638c157eeaa50a5be5c734ed71240faeafe93/0> . _:b56629408 <http://www.w3.org/ns/oa#hasSelector> _:b56629409 . _:b56629409 <http://www.w3.org/ns/oa#exact> "positive" . _:b56629409 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> .