instruction:
In this task, you need to reverse all words of a given length in the sentence. The number of letters in a word determine its length. For example, the length of the word "apple" is 5.
question:
Sentence: 'a gray tiger cat sitting on top of a chair'. Reverse all words of length '3' in the given sentence.
answer:
a gray tiger tac sitting on pot of a chair


question:
Sentence: 'a dog standing on top of a dirt field next to a frisbee'. Reverse all words of length '4' in the given sentence.
answer:
a dog standing on top of a trid field txen to a frisbee


question:
Sentence: 'a group of people who are sitting at tables'. Reverse all words of length '3' in the given sentence.
answer:

a group of people ohw era sitting at tables