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.

Sentence: 'a herd of horses is exercised in the yard led by a man on horseback'. Reverse all words of length '6' in the given sentence.
a herd of sesroh is exercised in the yard led by a man on horseback

Sentence: 'airplane flying in front of mountains and clouds'. Reverse all words of length '2' in the given sentence.
airplane flying ni front fo mountains and clouds

Sentence: 'a blue bowl of oranges is sitting on a wooden table'. Reverse all words of length '7' in the given sentence.

a blue bowl of segnaro is gnittis on a wooden table