Complex sentence: In 1946 Manitou joined the School of Young Jewish Leadership in Orsay, near Paris (1946-1969) and in 1951 he was elected principal of the school together with Prof. Andre Neher as president.
Split into simpler sentences: In 1946 Manitou joined the School of Young Jewish Leadership in Orsay, near Paris (1946-1969). In 1951 he was elected principal of the school in Orsay, together with Prof. Andre Neher as president.