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.

Example Input: Two poeple walking over a bridge while holding umbrellas.
Example Output: poeple

Example Input: A dish filled with food sitting on top of an ovne.
Example Output: ovne.

Example Input: A trani or shuttle is parked outside at a remote station.
Example Output:
trani