Complex sentence: Great Sultan is one of various informal titles, such as Grand Turk, used to refer to the Ottoman Sultan, known in Ottoman Turkish as "Padishah", "Hünkar" or "Hakan", the sovereign of the Ottoman dynasty.
Split into simpler sentences: Great Sultan is one of various informal titles, such as Grand Turk, used to refer to the Ottoman Sultan. The latter ruler is known in Ottoman Turkish as "Padishah", "Hünkar" or "Hakan", the sovereign of the Ottoman dynasty.