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 person in bear feet standing on a skateboard'. Reverse all words of length '4' in the given sentence.

SOLUTION: a person in raeb teef standing on a skateboard

PROBLEM: Sentence: 'a large commuter bus stops at a bus stop'. Reverse all words of length '2' in the given sentence.

SOLUTION: a large commuter bus stops ta a bus stop

PROBLEM: Sentence: 'two men are carrying their surfboards and heading home'. Reverse all words of length '4' in the given sentence.

SOLUTION:
two men are carrying their surfboards and heading emoh