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: 'many pairs of open scissors sit on top of metal poles'. Reverse all words of length '4' in the given sentence.
[A]: ynam pairs of nepo scissors sit on top of metal poles


[Q]: Sentence: 'an old traditional pirate ship in modern city'. Reverse all words of length '3' in the given sentence.
[A]: an dlo traditional pirate ship in modern city


[Q]: Sentence: 'a black bear climbs over a rocky slope at the edge of the tree line'. Reverse all words of length '3' in the given sentence.
[A]:
a black bear climbs over a rocky slope at eht edge of eht tree line