You are given a list of queries separated by new line. Your job is to answer with the query that is the most well-formed or well-structured query in terms of grammar, punctuations, or spelling errors.

What is michael phelps penis size ?
Scandinavia is part of this continent ?
Advantages and disadvatages of a mixed economy ?
How change windscreen wiper front 107 ?
What is michael phelps penis size ?