_:b56589504 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/53b904adef046dbb95332389dee37fb812f8ae4c/3> . _:b56589504 <http://www.w3.org/ns/oa#hasSelector> _:b56589505 . _:b56589505 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b56589505 <http://www.w3.org/ns/oa#exact> "BW" .