_:b57291412 <http://www.w3.org/ns/oa#hasSelector> _:b57291413 . _:b57291412 <http://www.w3.org/ns/oa#hasSource> <http://ns.inria.fr/covid19/arg/d872d7808179359c4a95b193c76a38c48efe8a38/4> . _:b57291413 <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://www.w3.org/ns/oa#TextQuoteSelector> . _:b57291413 <http://www.w3.org/ns/oa#exact> "appointment" .