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 plate has chicken potatoes and toast on it'. Reverse all words of length '1' in the given sentence.
a plate has chicken potatoes and toast on it

Sentence: 'a man is standing on a sidewalk with his bike'. Reverse all words of length '3' in the given sentence.
a nam is standing on a sidewalk with sih bike

Sentence: 'a couple of giraffe sitting in the grass'. Reverse all words of length '6' in the given sentence.

a elpuoc of giraffe sitting in the grass