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 cat is playing with the bottom part of the umbrella'. Reverse all words of length '3' in the given sentence.
answer:
a tac is playing with eht bottom part of eht umbrella


question:
Sentence: 'a man holding a remote and standing up'. Reverse all words of length '3' in the given sentence.
answer:
a nam holding a remote dna standing up


question:
Sentence: 'a man on a surfboard riding a wave in the ocean'. Reverse all words of length '5' in the given sentence.
answer:

a man on a surfboard riding a wave in the naeco