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 family room area without anybody in it'. Reverse all words of length '7' in the given sentence.

SOLUTION: a family room area tuohtiw ydobyna in it

PROBLEM: Sentence: 'a bird sits atop a post near a boat dock with large boats in the background'. Reverse all words of length '1' in the given sentence.

SOLUTION: a bird sits atop a post near a boat dock with large boats in the background

PROBLEM: Sentence: 'a river filled with lots of boats and surrounded by buildings'. Reverse all words of length '4' in the given sentence.

SOLUTION:
a river filled htiw stol of boats and surrounded by buildings