TASK DEFINITION: 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.
PROBLEM: Sentence: 'a group of people sitting on a wooden bench'. Reverse all words of length '1' in the given sentence.

SOLUTION: a group of people sitting on a wooden bench

PROBLEM: Sentence: 'group of antelopes and deer standing outside in a savannah'. Reverse all words of length '9' in the given sentence.

SOLUTION: group of sepoletna and deer standing outside in a savannah

PROBLEM: Sentence: 'a couple of beautiful woman crossing a street'. Reverse all words of length '9' in the given sentence.

SOLUTION:
a couple of lufituaeb woman crossing a street