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 bear in a field next to a pond'. Reverse all words of length '5' in the given sentence.
Example Output: a bear in a dleif next to a pond

Example Input: Sentence: 'a man laying on a bench and a woman next to him touching his face'. Reverse all words of length '4' in the given sentence.
Example Output: a man laying on a bench and a woman txen to him touching his ecaf

Example Input: Sentence: 'a parrot standing in the snow next to a car'. Reverse all words of length '3' in the given sentence.
Example Output:
a parrot standing in eht snow next to a rac