(c) its response to the relief sought; (d) its comments as to the place of arbitration, the applicable law and the language of the arbitration. (2) The Registrar may for sufficient cause grant the Respondent an extension of the time for filing the answer. (3) The Statement of Defence shall be supplied to the Registrar in the number of copies specified by Rule 10 (1). (4) A copy of the Statement of Defence and the documents annexed thereto shall be filed with the Registrar and served on the Claimant by the Respondent. (5) Any counterclaim(s) made by the Respondent shall be filed with its answer and shall provide: (a) a description of the nature and circumstances of the dispute giving rise to the counterclaim(s); and (b) a statement of the relief sought, including, to the extent possible, an indication of any amount(s) counterclaimed. (6) The Claimant shall file and serve the Respondent a reply to any counterclaim within 30 days from the date of receipt of the counterclaim(s) communicated by the Respondent. The Registrar may grant the Claimant an extension of time for filing the reply. Rule 6: Default (1) If within the time fixed by the Tribunal, the Claimant fails to communicate its claim without sufficient cause, the Tribunal shall issue an order for the termination of the arbitral proceedings. If, within the period of time fixed by the Tribunal, the Respondent has failed to communicate his statement of defence without sufficient cause, the Tribunal shall order that the proceedings continue. (2) If one of the parties, duly notified under these Rules, fails to appear at a hearing, without sufficient cause, the Tribunal may proceed with the arbitration. (3) If a party, duly invited to produce documentary evidence, fails to do so within the specified period, without sufficient cause, the Tribunal may make the award on the evidence before it. 4