You will be given a definition of a task first, then some input of the task.
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: TV NOSTALGIA
Clue: This movie cowboy's '50s TV series was so popular that his horse Champion got his own series, too
Output:
gene autry