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 man is riding a skateboard at a skateboard park'. Reverse all words of length '1' in the given sentence.

SOLUTION: a man is riding a skateboard at a skateboard park

PROBLEM: Sentence: 'an old fashioned setting of people playing tennis'. Reverse all words of length '6' in the given sentence.

SOLUTION: an old fashioned setting of elpoep playing sinnet

PROBLEM: Sentence: 'a toilet with a hello kitty symbol on it'. Reverse all words of length '4' in the given sentence.

SOLUTION:
a toilet htiw a hello kitty symbol on it