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 wooden bench sits on top of a grass hill'. Reverse all words of length '2' in the given sentence.
a wooden bench sits no top fo a grass hill

Sentence: 'several stacks of trunks in front of a building'. Reverse all words of length '8' in the given sentence.
several stacks of trunks in front of a gnidliub

Sentence: 'a dock with some people standing next to a plane'. Reverse all words of length '8' in the given sentence.

a dock with some people gnidnats next to a plane