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 silver bmw motorcycle being posed for a picture'. Reverse all words of length '1' in the given sentence.

SOLUTION: a silver bmw motorcycle being posed for a picture

PROBLEM: Sentence: 'reflection of window on mirror in dark bathroom'. Reverse all words of length '10' in the given sentence.

SOLUTION: noitcelfer of window on mirror in dark bathroom

PROBLEM: Sentence: 'a guy trying to grind a rail with a skateboard'. Reverse all words of length '1' in the given sentence.

SOLUTION:
a guy trying to grind a rail with a skateboard