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: With a proud octagonal tower that rises out of the top of the structure, it was built to mark the passage of the Emperor Humayun after his defeat in the 1540s. Choices: 1. The octagonal tower was built in reference to Emperor Humayun's 16th century defeat. 2. Without towers, the structure was made as low to the ground as possible to avoid easy detection from afar. 3. The octagonal tower was made to symbolize the eight years Emperor Humayan spent at war.

3