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 and a woman wearing all black are sitting next to each other on a bench'. Reverse all words of length '4' in the given sentence.
a man and a woman wearing all black are sitting txen to hcae other on a bench

Sentence: 'a street performer copying a woman on her phone'. Reverse all words of length '7' in the given sentence.
a street performer gniypoc a woman on her phone

Sentence: 'a tall sign advertising a movie on the side of a building'. Reverse all words of length '4' in the given sentence.

a llat ngis advertising a movie on the edis of a building