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.

[Q]: Sentence: 'a man being towed behind a boat on a board'. Reverse all words of length '4' in the given sentence.
[A]: a man being towed behind a taob on a board


[Q]: Sentence: 'a group of people riding in a black raft'. Reverse all words of length '1' in the given sentence.
[A]: a group of people riding in a black raft


[Q]: Sentence: 'a glass of water is sitting on a wood table'. Reverse all words of length '2' in the given sentence.
[A]:
a glass fo water si sitting no a wood table