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.
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Question: A buoilding with a black and white clock tower

Answer: buoilding


Question: A man wlaking down a street while talking on a cellphone.

Answer: wlaking


Question: An apartent size refrigerator on an extended wooden desk near an open closet.

Answer:
apartent