Q: You are given a set of queries separated by '
', and your job is to find out the query which is not a well-formed or well-structured query in terms of grammar, punctuations, or spelling errors.
How many serial killers are in Canada ?
Do focus groups provide quantitative or qualitative data ?
How much is a 1970 silver half sollar worth ?
How much money does a doctor makes in a year ?
A:
How much is a 1970 silver half sollar worth ?