_:b57530292 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/f1a107788ce585f3f5a7daa6b2eaf55997935192/2> . _:b57530293 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57530293 <http://www.w3.org/ns/oa#exact> "changes" . _:b57530292 <http://www.w3.org/ns/oa#hasSelector> _:b57530293 .