Task: Question Answering
Input (English): passage: If ``infield fly'' is called and the fly ball is caught, it is treated exactly as an ordinary caught fly ball; the batter is out, there is no force, and the runners must tag up. On the other hand, if ``infield fly'' is called and the ball lands fair without being caught, the batter is still out, there is still no force, but the runners are not required to tag up. In either case, the ball is live, and the runners may advance on the play, at their own peril.
 question: is the ball dead on an infield fly?
Output (English): No