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: 'an aboveground subway car on a city street'. Reverse all words of length '6' in the given sentence.

SOLUTION: an aboveground yawbus car on a city teerts

PROBLEM: Sentence: 'an adult goat standing beside its baby goats in a grassy area'. Reverse all words of length '5' in the given sentence.

SOLUTION: an tluda goat standing beside its baby staog in a grassy area

PROBLEM: Sentence: 'a clock above a busy urban side walk'. Reverse all words of length '5' in the given sentence.

SOLUTION:
a kcolc evoba a busy nabru side walk