You will be given a definition of a task first, then an example. Follow the example to solve a new instance of the task.
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.

Sentence: 'as a guy jumps over the snow with his snowboard people riding on the lift behind him look on'. Reverse all words of length '6' in the given sentence.
Solution: as a guy jumps over the snow with his snowboard elpoep gnidir on the lift dniheb him look on
Why? Words 'people', 'riding', 'behind' are of length 6. Reversing these words results in 'elpoep', 'gnidir', and 'dniheb' respectively. So this is a correct answer.

New input: Sentence: 'a moose like ornament is peeking out of a holiday tree alongside smaller painted ornaments'. Reverse all words of length '2' in the given sentence.
Solution:

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
a moose like ornament si peeking out fo a holiday tree alongside smaller painted ornaments