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 very small shiny metal cup with some food in it'. Reverse all words of length '4' in the given sentence.

SOLUTION: a yrev small shiny metal cup htiw emos doof in it

PROBLEM: Sentence: 'several vehicles at a traffic stop on a small downtown street'. Reverse all words of length '4' in the given sentence.

SOLUTION: several vehicles at a traffic pots on a small downtown street

PROBLEM: Sentence: 'a group of young boys standing behind two microphones'. Reverse all words of length '8' in the given sentence.

SOLUTION:
a group of young boys gnidnats behind two microphones