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: 'people flying kites at the beach on an overcast day'. Reverse all words of length '6' in the given sentence.
Example Output: elpoep gniylf kites at the beach on an overcast day

Example Input: Sentence: 'a magazine cover with a surfer carrying a white surfboard'. Reverse all words of length '9' in the given sentence.
Example Output: a magazine cover with a surfer carrying a white draobfrus

Example Input: Sentence: 'a bunch of suit cases as sitting on top of each other'. Reverse all words of length '4' in the given sentence.
Example Output:
a bunch of tius cases as sitting on top of hcae other