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


[Q]: Sentence: 'a cat attentively watching a graphic on a television screen'. Reverse all words of length '7' in the given sentence.
[A]: a cat attentively watching a cihparg on a television screen


[Q]: Sentence: 'the grey and red fire hydrant was in the snow'. Reverse all words of length '2' in the given sentence.
[A]:
the grey and red fire hydrant was ni the snow