| http://www.w3.org/ns/prov#value | - (1) Unless otherwise agreed by the parties, the arbitral tribunal shall decide whether to hold oral hearings for the presentation of evidence or for oral argument, or whether the proceedings shall be conducted on the basis of documents and other materials: Provided that the arbitral tribunal shall hold oral hearings, at an appropriate stage of the proceedings, on a request by a party, unless the p
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