You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For simplicity, answers should be in all lower cased letters.

Category: ISLANDS 
Clue: Part of the 4th-most populous country, it's the world's most populous single island with about 120 million people
java

Category: THE SPACE PROGRAM 
Clue: In 1979 NASA officials received a fine for littering from a small town in this country
australia

Category: LITERATURE 
Clue: This 1877 novel was written "to induce kindness, sympathy and an understanding treatment of horses"

black beauty