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 mean standing by their bikes that have baskets on the back used for transporting food'. Reverse all words of length '4' in the given sentence.

two naem standing by their bikes taht evah baskets on the kcab desu for transporting doof