Which island is the largest in the Hawaiian archipelago?

What is the world's second-largest island by area? Which island nation is located off the coast of East Africa and is known for its unique wildlife? Which island is the largest in the Japanese archipelago? What is the largest island in the British Isles? Which island is the largest in the Canadian province of Quebec? What is the name of the third-largest island in the world? In which continent is the island of Greenland located? In which country is the island of Sumatra located?