instruction:
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.
question:
Sentence: 'a guy on  a surf board by a very big wave'. Reverse all words of length '3' in the given sentence.
answer:
a yug on a surf board by a very gib wave


question:
Sentence: 'a small clean unoccupied bathroom on public transportation'. Reverse all words of length '10' in the given sentence.
answer:
a small clean deipucconu bathroom on public transportation


question:
Sentence: 'there is a child that is sleeping on the bench'. Reverse all words of length '4' in the given sentence.
answer:

there is a child taht is sleeping on the bench