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 couple walking in the rain using and umbrella'. Reverse all words of length '6' in the given sentence.
answer:
a elpuoc walking in the rain using and umbrella


question:
Sentence: 'a girl in a wig holding a tennis racket'. Reverse all words of length '3' in the given sentence.
answer:
a girl in a giw holding a tennis racket


question:
Sentence: 'a picture of a man swinging a racket at a tennis ball'. Reverse all words of length '2' in the given sentence.
answer:

a picture fo a man swinging a racket ta a tennis ball