TASK DEFINITION: You are given a sentence and a question in the input. The information provided in the sentence should be enough to answer the question. You're expected to write the correct answer. Do not use any facts other than those provided in the sentence.
PROBLEM: Sentence: He was in such a bad mood after.
Question: Why was the baby crying?

SOLUTION: He was in a bad mood.

PROBLEM: Sentence: With the bad man gone, all the people had a giant party and sang a song about the greatness of their ruler.
Question: Who did the people sing about?

SOLUTION: The greatness of their ruler.

PROBLEM: Sentence: There was a river near the bear's cave, and he loved to sit on the bank and look at the fish and frogs, and at his own reflection in the water.
Question: Where did the bear like to sit?

SOLUTION:
on the bank of the river near his cave.