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.
--------
Question: Sentence: 'a bicycle parked on a bridge next to a marina'. Reverse all words of length '4' in the given sentence.

Answer: a bicycle parked on a bridge txen to a marina


Question: Sentence: 'the cox is standing behind the fence alone'. Reverse all words of length '2' in the given sentence.

Answer: the cox si standing behind the fence alone


Question: Sentence: 'a man is using are urinal while smiling at the camera'. Reverse all words of length '3' in the given sentence.

Answer:
a nam is using era urinal while smiling at eht camera