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 trains are sitting on some tracks'. Reverse all words of length '2' in the given sentence.

A: a couple fo trains are sitting no some tracks
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Q: Sentence: 'a woman is riding a show horse at a competition'. Reverse all words of length '6' in the given sentence.

A: a woman is gnidir a show horse at a competition
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Q: Sentence: 'a passenger jet being serviced on a runway in an airport'. Reverse all words of length '7' in the given sentence.

A:
a passenger jet being serviced on a runway in an tropria
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