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.

[Q]: Category: NATIVE AMERICANS 
Clue: A Pennsylvania city, a canal & a Great Lake are named for this tribe
[A]: the erie


[Q]: Category: SPORTS BOOKS 
Clue: In 1998 the author of this controversial 1970 book was finally invited to play in a Yankees old-timers' game
[A]: \"ball four\"


[Q]: Category: ASTRONOMY 
Clue: It's the century during which Saturn's rings were first observed
[A]:
the 17th century