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 small kid walks down a aisle with an umbrella in hand'. Reverse all words of length '8' in the given sentence.

SOLUTION: a small kid walks down a aisle with an allerbmu in hand

PROBLEM: Sentence: 'three people on a tennis court playing tennis'. Reverse all words of length '6' in the given sentence.

SOLUTION: three elpoep on a sinnet court playing sinnet

PROBLEM: Sentence: 'a couple of cats stand on top of a car'. Reverse all words of length '6' in the given sentence.

SOLUTION:
a elpuoc of cats stand on top of a car