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 person going on a slop jump on skis'. Reverse all words of length '6' in the given sentence.
a nosrep going on a slop jump on skis

Sentence: 'a man plays a game with a wii controller'. Reverse all words of length '1' in the given sentence.
a man plays a game with a wii controller

Sentence: 'an upside down stop sign in a residential area'. Reverse all words of length '2' in the given sentence.

na upside down stop sign ni a residential area