Task: Question Answering
Input (English): At home, I have a 20-gallon fish tank filled with colorful tropical fish. I keep it in the living room on a special table where everyone can admire the fish. It makes me feel peaceful to sit and watch the fish as they drift and swim around. I have taken great care in selecting the fish that go into the tank, to make sure they will all get along. There is an expert at the fish store who gives me instructions on how to make sure the fish are happy and healthy in their environment. Part of the daily regimen is feeding the fish the best food I can get for them. I love to lift the lid of the tank and sprinkle their special food onto the surface of the water. The fish rise to the surface and begin to eat the food. They know it's dinner time, based on my motions and the lifting of the lid. I know just how much food to give them in order to keep the fish happy and satisfied. 
Question: Why did they feed the fish?
Output (English): If you don't feed fish they die