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.

Sentence: 'a grey clock tower with trees and wall below'. Reverse all words of length '5' in the given sentence.
a grey kcolc rewot with seert and wall woleb

Sentence: 'this cat is sitting on a porch near a tire'. Reverse all words of length '7' in the given sentence.
this cat is gnittis on a porch near a tire

Sentence: 'man in ocean surfing while another watches with board'. Reverse all words of length '4' in the given sentence.

man in ocean surfing while another watches htiw board