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.

[Q]: Sentence: 'three cows graze on the food that sits just outside their pens'. Reverse all words of length '5' in the given sentence.
[A]: eerht cows ezarg on the food that sits just outside rieht pens


[Q]: Sentence: 'a woman walks a horse wearing a blanket'. Reverse all words of length '7' in the given sentence.
[A]: a woman walks a horse gniraew a teknalb


[Q]: Sentence: 'a zebra standing in the dirt with its head to the ground'. Reverse all words of length '5' in the given sentence.
[A]:
a arbez standing in the dirt with its head to the ground