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 bunch of umbrellas are up in the air'. Reverse all words of length '9' in the given sentence.

SOLUTION: a bunch of sallerbmu are up in the air

PROBLEM: Sentence: 'a clock tower in between two leafless trees'. Reverse all words of length '3' in the given sentence.

SOLUTION: a clock tower in between owt leafless trees

PROBLEM: Sentence: 'a skate boarder rolling horizontally on a wall'. Reverse all words of length '2' in the given sentence.

SOLUTION:
a skate boarder rolling horizontally no a wall