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: 'the family pet is asleep on the owners bed amid the rumpled comforter and satin pillows'. Reverse all words of length '4' in the given sentence.

the family pet is asleep on the owners bed dima the rumpled comforter and satin pillows