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 man sitting in a boat with a tv'. Reverse all words of length '7' in the given sentence.
a man gnittis in a boat with a tv

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: 'teenagers riding skateboards in a concrete skate park'. Reverse all words of length '1' in the given sentence.

teenagers riding skateboards in a concrete skate park