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 Input:
Sentence: 'a sign explain the meaning of the road work'. Reverse all words of length '7' in the given sentence.

Ex Output:
a sign nialpxe the gninaem of the road work


Ex Input:
Sentence: 'a person riding a motorcycle on a road next to bales of straw'. Reverse all words of length '4' in the given sentence.

Ex Output:
a person riding a motorcycle on a daor txen to bales of straw


Ex Input:
Sentence: 'a group of people standing next to each other in a yard'. Reverse all words of length '4' in the given sentence.

Ex Output:

a group of people standing txen to hcae other in a dray