1. The annual budget of the Pan-African Parliament shall constitute an integral part of the regular budget of the OAU/AEC. 2. The budget shall be drawn up by the Pan-African Parliament in accordance with the Financial Rules and Regulations of the OAU/AEC and shall be approved by the Assembly until such time as the Pan-African Parliament shall start to exercise legislative powers. Article 16 Seat of the Pan-African Parliament The seat of the Pan-African Parliament shall be determined by the Assembly and shall be located in the territory of a State Party to this Protocol. However, the Pan-African Parliament may convene in the territory of any Member State at the invitation of that Member State. Article 17 Working Languages The working languages of the Pan-African Parliament shall be, if possible, African languages, Arabic, English, French and Portuguese. Article 18 The Relationship between the Pan-African Parliament and the Parliaments of Regional Economic Communities and National Parliaments or Other Deliberative Organs The Pan-African Parliament shall work in close co-operation with the Parliaments of the Regional Economic Communities and the National Parliaments or other deliberative organs of Member States. To this effect, the Pan-African Parliament may, in accordance with its Rules of Procedure, convene annual consultative fora with the Parliaments of the Regional Economic Communities and the National Parliaments or other deliberative organs to discuss matters of common interest. Article 19 Withdrawal The Pan-African Parliamentarians from a Member State which withdraws from the Community shall automatically cease to be Pan-African Parliamentarians. Article 20 Interpretation The Court of Justice shall be seized with all matters of interpretation emanating from this Protocol. Pending its establishment, such matters shall be submitted to the Assembly which shall decide by a two? thirds majority.