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 man in a blue shirt is playing tennis'. Reverse all words of length '3' in the given sentence.
answer:
a nam in a blue shirt is playing tennis


question:
Sentence: 'a bunch of umbrellas are up in the air'. Reverse all words of length '9' in the given sentence.
answer:
a bunch of sallerbmu are up in the air


question:
Sentence: 'two people engaging in a water activity'. Reverse all words of length '1' in the given sentence.
answer:

two people engaging in a water activity