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.

Q: Sentence: 'a red pair of scissors on top of an envelope'. Reverse all words of length '2' in the given sentence.

A: a red pair fo scissors no top fo na envelope
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Q: Sentence: 'a bent in half street sign next to a brick building'. Reverse all words of length '1' in the given sentence.

A: a bent in half street sign next to a brick building
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Q: Sentence: 'a skier is the only thing seen in the white background of the snow'. Reverse all words of length '5' in the given sentence.

A:
a reiks is the only gniht seen in the etihw background of the snow
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