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.

[EX Q]: Sentence: 'a cat sleeping with is hear resting on a keyboard'. Reverse all words of length '4' in the given sentence.
[EX A]: a cat sleeping htiw is raeh resting on a keyboard

[EX Q]: Sentence: 'many cows on a field of grass with trees in the background'. Reverse all words of length '1' in the given sentence.
[EX A]: many cows on a field of grass with trees in the background

[EX Q]: Sentence: 'a grey cat with green eyes looking straight ahead'. Reverse all words of length '1' in the given sentence.
[EX A]:
a grey cat with green eyes looking straight ahead