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 Input:
Sentence: 'a close up of the front of a train on train tracks'. Reverse all words of length '3' in the given sentence.

Ex Output:
a close up of eht front of a train on train tracks


Ex Input:
Sentence: 'someones living room with tiled flooring and a rocking chair'. Reverse all words of length '3' in the given sentence.

Ex Output:
someones living room with tiled flooring dna a rocking chair


Ex Input:
Sentence: 'a young man about to throw a disc or hit a ball'. Reverse all words of length '2' in the given sentence.

Ex Output:

a young man about ot throw a disc ro hit a ball