Complex sentence: It is the island with the 8th most number of Indonesians, and the 9th most populous island partially in the country, after Java, Sumatra, Borneo, Sulawesi, New Guinea, Bali, Madura, Lombok, and Timor.
Split into simpler sentences: It is the island with the 8th most number of Indonesians. Among all islands partially in Indonesia, it is the 9th most populous after Java, Sumatra, Borneo, Sulawesi, New Guinea, Bali, Madura, Lombok, and Timor.