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: two trains are parked side by side at the staiton

SOLUTION: staiton

PROBLEM: A lay eating while looking at another lady in a group of people

SOLUTION: lay

PROBLEM: A man dreassed in a black suit with a black plastic mask holding a green ball and looking very serious.

SOLUTION:
dreassed