_:b56168561 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b56168561 <http://www.w3.org/ns/oa#exact> "ritonavir" . _:b56168560 <http://www.w3.org/ns/oa#hasSelector> _:b56168561 . _:b56168560 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/1625b68213dbeb4482323d90c3318e3d134370e0/0> .