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.

[Q]: Sentence: 'a person in bear feet standing on a skateboard'. Reverse all words of length '4' in the given sentence.
[A]: a person in raeb teef standing on a skateboard


[Q]: Sentence: 'a very small shiny metal cup with some food in it'. Reverse all words of length '4' in the given sentence.
[A]: a yrev small shiny metal cup htiw emos doof in it


[Q]: Sentence: 'a man holding a stop sign while dressed in construction clothing'. Reverse all words of length '12' in the given sentence.
[A]:
a man holding a stop sign while dressed in noitcurtsnoc clothing