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 woman at an oven with door open holding a pan of cooked meat in an oven mitted hand and a food thermometer in the other hand'. Reverse all words of length '4' in the given sentence.

a woman at an nevo htiw rood nepo holding a pan of cooked taem in an nevo mitted dnah and a doof thermometer in the other dnah