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: 'three brown horses standing in a green field'. Reverse all words of length '5' in the given sentence.
Example Output: eerht nworb horses standing in a neerg dleif

Example Input: Sentence: 'a white and gray dining and living room area with colorful pillows'. Reverse all words of length '6' in the given sentence.
Example Output: a white and gray gninid and gnivil room area with colorful pillows

Example Input: Sentence: 'two lambs near each other under a tree'. Reverse all words of length '5' in the given sentence.
Example Output:
two sbmal near each rehto rednu a tree