Complex sentence: Rangatira (pronounced Rung-uh-tee-rah) are the hereditary Māori chieftains, descended from the chieftain of a waka, a boat of the first Māori settlers.
Split into simpler sentences: Rangatira (pronounced Rung-uh-tee-rah) are the hereditary Māori chieftains, descended from the chieftain/s of a waka. A waka was a boat of the first Māori settlers.