Definition: In this task, you're given a statement and three sentences as choices. Your job is to determine the neutral choice based on your inference from the statement and your commonsense knowledge. The neutral choice is a sentence that neither agrees nor disagrees with the statement. Indicate your answer as '1', '2', or '3', corresponding to the choice number of the selected sentence. If sentence X agrees with sentence Y, one's correctness follows from the other one. If sentence X disagrees with sentence Y, they can not be correct at the same time.
Input: Statement: At 4 o'clock, Mrs. Inglethorp quarrels with her son, and threatens to denounce him to his wife ”who, by the way, overheard the greater part of the conversation.  Choices: 1. Mrs. Inglethorp has no idea that her son's wife could hear their argument. 2. At 4 o'clock, Mrs. Inglethorp has an argument with her son. 3. At 4 o'clock, Mrs. Inglethorp listens to her son play the piano for her.

1