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 bif empty wooden bench by a street sign.

SOLUTION: bif

PROBLEM: A peeson wearing cold weather attire on a snow board.

SOLUTION: peeson

PROBLEM: A wonan is standing with a horse in front of a mountain.

SOLUTION:
wonan