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 is catching a frisbee at a competition'. Reverse all words of length '11' in the given sentence.
answer:
a dog is catching a frisbee at a noititepmoc


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


question:
Sentence: 'a snowboarder jumping a snowy slope on a mountain'. Reverse all words of length '5' in the given sentence.
answer:

a snowboarder jumping a ywons epols on a mountain