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: 'people watching a music concert being performed on a stage'. Reverse all words of length '5' in the given sentence.
[EX A]: people watching a cisum concert gnieb performed on a egats

[EX Q]: Sentence: 'the couple are smiling at each other as they sit on a bench'. Reverse all words of length '4' in the given sentence.
[EX A]: the couple are smiling at hcae other as yeht sit on a bench

[EX Q]: Sentence: 'a tall building with a traffic light in front of it'. Reverse all words of length '8' in the given sentence.
[EX A]:
a tall gnidliub with a traffic light in front of it