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 sign explain the meaning of the road work'. Reverse all words of length '7' in the given sentence.
Example Output: a sign nialpxe the gninaem of the road work

Example Input: Sentence: 'an adult goat standing beside its baby goats in a grassy area'. Reverse all words of length '5' in the given sentence.
Example Output: an tluda goat standing beside its baby staog in a grassy area

Example Input: Sentence: 'a baseball player is giving his autograph to a man in a crowd'. Reverse all words of length '3' in the given sentence.
Example Output:
a baseball player is giving sih autograph to a nam in a crowd