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 person in bear feet standing on a skateboard'. Reverse all words of length '4' in the given sentence.

A: a person in raeb teef standing on a skateboard
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Q: Sentence: 'a woman is taking a picture of her reflection in the mirror'. Reverse all words of length '6' in the given sentence.

A: a woman is gnikat a picture of her reflection in the rorrim
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Q: Sentence: 'a woman holding a colorful umbrella standing on top of a wet ground'. Reverse all words of length '8' in the given sentence.

A:
a woman holding a lufroloc allerbmu gnidnats on top of a wet ground
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