TASK DEFINITION: The given sentence contains a typo which could be one of the following four types: (1) swapped letters of a word e.g. 'niec' is a typo of the word 'nice'. (2) missing letter in a word e.g. 'nic' is a typo of the word 'nice'. (3) extra letter in a word e.g. 'nicce' is a typo of the word 'nice'. (4) replaced letter in a word e.g 'nicr' is a typo of the word 'nice'. You need to identify the typo in the given sentence. To do this, answer with the word containing the typo.
PROBLEM: A steeet sign that is mounted to the side of a building.

SOLUTION: steeet

PROBLEM: The audlt elephant is standing behind a young one.

SOLUTION: audlt

PROBLEM: Cloae up on two slices of pizza in a cardboard pizza box.

SOLUTION:
Cloae