instruction:
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.
question:
A room filed with an old fashioned stove and  a bear skin rug mounted on it's wall.
answer:
filed


question:
A cra on a street by a umbrella and building.
answer:
cra


question:
A briown dog, laying on the floor with a toothbrush in front of it.
answer:

briown