Complex sentence: The International Progress Organization (IPO) is a Vienna-based think tank that enjoys consultative status with the Economic and Social Council of the United Nations and is associated with the United Nations Department of Public Information.
Split into simpler sentences: The International Progress Organization (IPO) is a Vienna-based think tank. As an international non-governmental organization (NGO) it enjoys consultative status with the Economic and Social Council of the United Nations and is associated with the United Nations Department of Public Information.