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: 'the dog looks up at the cat sitting on a stone'. Reverse all words of length '1' in the given sentence.

SOLUTION: the dog looks up at the cat sitting on a stone

PROBLEM: Sentence: 'a pair of bikers riding past a kite store'. Reverse all words of length '6' in the given sentence.

SOLUTION: a pair of srekib gnidir past a kite store

PROBLEM: Sentence: 'three groups of yellow flowers in vases on table'. Reverse all words of length '2' in the given sentence.

SOLUTION:
three groups fo yellow flowers ni vases no table