You will be given a definition of a task first, then some input of the task.
In this task, you need to reverse the order of words in the given sentence.

Sentence: a man is touching a surf board in the back of a truck
Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
truck a of back the in board surf a touching is man a