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 panda bear walking around in the middle of a enclosure'. Reverse all words of length '6' in the given sentence.

SOLUTION: a panda bear walking dnuora in the elddim of a enclosure

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: 'giraffe on the lone planes of the desert'. Reverse all words of length '3' in the given sentence.

SOLUTION:
giraffe on eht lone planes of eht desert