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: 'a very large truck with people in back on a city street'. Reverse all words of length '6' in the given sentence.

Ex Output:
a very large truck with elpoep in back on a city teerts


Ex Input:
Sentence: 'one zebra rolls in the dust while another walks to the right'. Reverse all words of length '3' in the given sentence.

Ex Output:

eno zebra rolls in eht dust while another walks to eht right