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: 'pickup truck loaded with off road vehicles on driveway at residence'. Reverse all words of length '9' in the given sentence.

pickup truck loaded with off road vehicles on driveway at ecnediser