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: 'a female tennis player is running to catch the ball'. Reverse all words of length '6' in the given sentence.
Example Output: a elamef sinnet reyalp is running to catch the ball

Example Input: Sentence: 'a dog curled up sleeping on a bed with pillows'. Reverse all words of length '6' in the given sentence.
Example Output: a dog delruc up sleeping on a bed with pillows

Example Input: Sentence: 'a car surrounded by a herd of sheep'. Reverse all words of length '3' in the given sentence.
Example Output:
a rac surrounded by a herd of sheep