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: 'two road signs one for the beltway and one for i95'. Reverse all words of length '3' in the given sentence.

owt road signs eno rof eht beltway dna eno rof 59i