Complex sentence: The Ad Hoc Working Group is open to all UN Member States and Observers, and relevant UN specialised agencies and programmes and non-governmental organizations with consultative status with the UN Economic and Social Council may also be observers.
Split into simpler sentences: The Ad Hoc Working Group is open to all UN Member States and Observers. Relevant UN specialised agencies and programmes and non-governmental organizations with consultative status with the UN Economic and Social Council may also be observers.