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 group of skiers standing at the base of a mountain'. Reverse all words of length '3' in the given sentence.

A: a group of skiers standing at eht base of a mountain
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Q: Sentence: 'a person holding a yummy looking hot dog'. Reverse all words of length '7' in the given sentence.

A: a person gnidloh a yummy gnikool hot dog
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Q: Sentence: 'a man smiling while holding a plate with heart shaped pizza on it'. Reverse all words of length '2' in the given sentence.

A:
a man smiling while holding a plate with heart shaped pizza no ti
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