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: 'many cows on a field of grass with trees in the background'. Reverse all words of length '1' in the given sentence.
many cows on a field of grass with trees in the background

Sentence: 'a person parasails in water with mountains in the background'. Reverse all words of length '4' in the given sentence.
a person parasails in water htiw mountains in the background

Sentence: 'a photograph of a website video of a phone'. Reverse all words of length '2' in the given sentence.

a photograph fo a website video fo a phone