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 couple of giraffes standing in front of a metal fence'. Reverse all words of length '8' in the given sentence.

A: a couple of seffarig gnidnats in front of a metal fence
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Q: Sentence: 'a person jumping up into the air on a skateboard'. Reverse all words of length '1' in the given sentence.

A: a person jumping up into the air on a skateboard
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Q: Sentence: 'a herd of sheep grazing on a lush green hill side under rays of sunlight'. Reverse all words of length '5' in the given sentence.

A:
a herd of peehs grazing on a lush neerg hill side rednu rays of sunlight
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