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 man assisting a person on a horse on a race track'. Reverse all words of length '3' in the given sentence.
[A]: a nam assisting a person on a horse on a race track


[Q]: Sentence: 'an old church with two bell towers is pictured'. Reverse all words of length '8' in the given sentence.
[A]: an old church with two bell towers is derutcip


[Q]: Sentence: 'close up of the neck and head of a giraffe looking into the camera with two close together trees just behind against clear blue sky'. Reverse all words of length '5' in the given sentence.
[A]:
esolc up of the neck and head of a giraffe looking into the camera with two esolc together seert just behind against raelc blue sky