_:b56579696 <http://www.w3.org/ns/oa#hasSelector> _:b56579697 . _:b56579696 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/8459a284bbce4ccc463a2b0e402128ad85d9568f/0> . _:b56579697 <http://www.w3.org/ns/oa#exact> "cost" . _:b56579697 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> .