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.

Example Input: Sentence: 'a woman about to serve a tennis ball'. Reverse all words of length '2' in the given sentence.
Example Output: a woman about ot serve a tennis ball

Example Input: Sentence: 'two men are playing a wii boxing game'. Reverse all words of length '4' in the given sentence.
Example Output: two men are playing a wii boxing emag

Example Input: Sentence: 'a woman sitting at an outside patio table under a blue umbrella eating food'. Reverse all words of length '7' in the given sentence.
Example Output:
a woman gnittis at an edistuo patio table under a blue umbrella eating food