mnli premise: On the island of Borneo, the great natural attractions are Sarawak's caves at Niah and Mulu, river cruises with a visit to tribal longhouses, Sabah's national parks of Mount Kinabalu and the offshore islands, and the Sepilok wildlife sanctuary. hypothesis: Sarawak's caves at Niah and Mulu, Sabah's national parks of Mount Kinabulu and other attractions can be experienced on the island of Borneo.