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: 'a group of men playing on a basketball court next to doors'. Reverse all words of length '3' in the given sentence.
a group of nem playing on a basketball court next to doors

Sentence: 'skateboarder performing a grind on the side of the wall'. Reverse all words of length '4' in the given sentence.
skateboarder performing a grind on the edis of the llaw

Sentence: 'elephants swimming in a water hole in the sun'. Reverse all words of length '4' in the given sentence.

elephants swimming in a water eloh in the sun