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 city truck two city buses and a yellow fire hydrant'. Reverse all words of length '4' in the given sentence.

SOLUTION: a ytic truck two ytic buses and a yellow erif hydrant

PROBLEM: Sentence: 'a very pretty plate filled with some good looking food'. Reverse all words of length '5' in the given sentence.

SOLUTION: a very pretty etalp filled with some good looking food

PROBLEM: Sentence: 'a person that is playing with a frisbee'. Reverse all words of length '7' in the given sentence.

SOLUTION:
a person that is gniyalp with a eebsirf