_:b56253128 <http://www.w3.org/ns/oa#hasSelector> _:b56253129 . _:b56253129 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b56253128 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/d53508d43264f59007fd5e4aa8b4af026edf0bfe/1> . _:b56253129 <http://www.w3.org/ns/oa#exact> "ritonavir" .