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: 'adult male in skiing attire with baby boy at mt judah'. Reverse all words of length '4' in the given sentence.

adult elam in skiing attire htiw ybab boy at mt judah