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: 'a closeup of a persons hands as it plays with a wii controller in front of booklet with mario and luigi characters'. Reverse all words of length '4' in the given sentence.

a closeup of a persons hands as it plays htiw a wii controller in front of booklet htiw mario and luigi characters