In this task, you will be given a short story or summary of a situation which is called a premise. Your task is to generate a question based on the given premise. The generated question (i) must be unambiguous, (ii) must be relevant to the premise, (iii) should require commonsense reasoning to get answered. You should not use any outside knowledge to generate the question.

Example input: The small triangle was angry at the big triangle. The big triangle ran away
Example output: Why did the big triangle ran away?
Example explanation: The output question can be answered by reading the input premise. Also, the question lies within the context of the premise. So, it is a good question.
Q: A triangle is alone in the house not moving. A circle enters the door of the house and nudges the triangle.
A:
The triangle starts moving around. What just happened?