Complex sentence: The Inughuit (also spelled Inuhuit) or Polar Eskimos are the northernmost group of Inuit, and the world's northernmost people, living in Greenland.
Split into simpler sentences: The Inughuit (also spelled Inuhuit) are a Greenlandic Inuit people. Also known as Polar Eskimos, they are the northernmost group of Inuit, and the world's northernmost people, living in Greenland.