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.

[EX Q]: Sentence: 'a man on a surfboard riding a wave in the ocean'. Reverse all words of length '6' in the given sentence.
[EX A]: a man on a surfboard gnidir a wave in the ocean

[EX Q]: Sentence: 'an assortment of chinese dinner options are arranged'. Reverse all words of length '8' in the given sentence.
[EX A]: an assortment of chinese dinner options are degnarra

[EX Q]: Sentence: 'the flock of sheep are gathering in order to stay warm'. Reverse all words of length '2' in the given sentence.
[EX A]:
the flock fo sheep are gathering ni order ot stay warm