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

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