Instructions: 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.
Input: What is sodium and potassium exchange pump ?
Type of food does a bearded fireworm eat ?
Height of mauna loa above the sea floor ?
What is president obama 's nick name ?
Output:
What is president obama 's nick name ?