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 dog jumping high in the air catching a frisbee in its mouth'. Reverse all words of length '8' in the given sentence.
answer:
a dog jumping high in the air gnihctac a frisbee in its mouth


question:
Sentence: 'a man is riding a skateboard at a skateboard park'. Reverse all words of length '1' in the given sentence.
answer:
a man is riding a skateboard at a skateboard park


question:
Sentence: 'a cat is sitting on top of an entertainment system'. Reverse all words of length '3' in the given sentence.
answer:

a tac is sitting on pot of an entertainment system