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.

[EX Q]: a peeson sitting down and using a cellular phone.
[EX A]: peeson

[EX Q]: A cat stabnds next to a rocking chair in a room with floors that are covered in a thin sheet.
[EX A]: stabnds

[EX Q]: A grup of people gather around an airplane.
[EX A]:
grup