Complex sentence: The International Council for Philosophy and Humanistic Studies (ICPHS) is a non-governmental organization within UNESCO, which is a supraorganization of hundreds of learned societies in the field of philosophy, human sciences and related subjects.
Split into simpler sentences: The International Council for Philosophy and Humanistic Studies (ICPHS) is a non-governmental organization within UNESCO. It embraces hundreds of learned societies in the field of philosophy, human sciences and related subjects.