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.

[EX Q]: Sentence: 'a close up of the front of a train on train tracks'. Reverse all words of length '3' in the given sentence.
[EX A]: a close up of eht front of a train on train tracks

[EX Q]: Sentence: 'a red double decker bus parked in front of a building'. Reverse all words of length '1' in the given sentence.
[EX A]: a red double decker bus parked in front of a building

[EX Q]: Sentence: 'elephants wearing fancy blankets carrying two people on each one'. Reverse all words of length '9' in the given sentence.
[EX A]:
stnahpele wearing fancy blankets carrying two people on each one