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 small kid walks down a aisle with an umbrella in hand'. Reverse all words of length '8' in the given sentence.
answer:
a small kid walks down a aisle with an allerbmu in hand


question:
Sentence: 'several people flying kites on a sandy beach'. Reverse all words of length '7' in the given sentence.
answer:
lareves people flying kites on a sandy beach


question:
Sentence: 'a couple of air planes flying in opposite directions'. Reverse all words of length '10' in the given sentence.
answer:

a couple of air planes flying in opposite snoitcerid