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: 'there is an entree on a place with spoon'. Reverse all words of length '6' in the given sentence.
there is an eertne on a place with spoon

Sentence: 'a small elephant standing next to a forest full of trees'. Reverse all words of length '5' in the given sentence.
a llams elephant standing next to a forest full of seert

Sentence: 'a desk is cluttered with trash books and a computer'. Reverse all words of length '9' in the given sentence.

a desk is derettulc with trash books and a computer