Task: Question Answering
Input (English): Question: If John decreases the rate at which gas exits the bottom of his rocket, what will happen to the upward momentum of the rocket? It will 
 Option1: increase 
 Option2: decrease 
 Explanation: The rocket goes upwards because the hot gases shoot downwards out of the nozzle. The faster the gases go downwards, the faster the rocket goes upwards.
Output (English): decrease