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: 'ladies and mans rest rooms in a public place'. Reverse all words of length '2' in the given sentence.
ladies and mans rest rooms ni a public place

Sentence: 'a couple of elephants that are in some water'. Reverse all words of length '6' in the given sentence.
a elpuoc of elephants that are in some water

Sentence: 'a group of people in grassy area with kites in the sky'. Reverse all words of length '6' in the given sentence.

a group of elpoep in yssarg area with kites in the sky