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: A chcolate doughnut with colored sprinkles and a cup of tea.
Example Output: chcolate

Example Input: a woan in a dress stands in front of a couple of horses
Example Output: woan

Example Input: A zevra eating food in a enclosure with a man and baby looking on.
Example Output:
zevra