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.

Example Input: Sentence: 'people watching a music concert being performed on a stage'. Reverse all words of length '5' in the given sentence.
Example Output: people watching a cisum concert gnieb performed on a egats

Example Input: Sentence: 'a view of a kitchen with a person cooking some food'. Reverse all words of length '1' in the given sentence.
Example Output: a view of a kitchen with a person cooking some food

Example Input: Sentence: 'a birthday cake lit up with candles on a countertop'. Reverse all words of length '8' in the given sentence.
Example Output:
a yadhtrib cake lit up with candles on a countertop