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.
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Question: Sentence: 'a green apple and knife on dark wooden stairs'. Reverse all words of length '3' in the given sentence.

Answer: a green apple dna knife on dark wooden stairs


Question: Sentence: 'a bicycle parked on a bridge next to a marina'. Reverse all words of length '4' in the given sentence.

Answer: a bicycle parked on a bridge txen to a marina


Question: Sentence: 'a man holding a violin to his cheek at a performance'. Reverse all words of length '5' in the given sentence.

Answer:
a man holding a violin to his keehc at a performance