Definition: 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.
Input: Sentence: 'two horses one is white the other is brown and white and some water'. Reverse all words of length '6' in the given sentence.

two sesroh one is white the other is brown and white and some water