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: '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: 'an aboveground subway car on a city street'. Reverse all words of length '6' in the given sentence.
[EX A]: an aboveground yawbus car on a city teerts

[EX Q]: Sentence: 'a small marina next to a wall of rocks'. Reverse all words of length '6' in the given sentence.
[EX A]:
a small aniram next to a wall of rocks