Read the given query and classify it as a 'Good' or 'Bad' query depending on how well the query is formed, 'Bad' being the expected output for a not so well formed query and 'Good' being the expected output for a well formed query. A query may be wrong based on common sense or general facts, but if it is well formed, you should answer with Good.

[EX Q]: What causes opacity ?
[EX A]: Good

[EX Q]: How do you remove fuel filter on 2003 GMC yukon ?
[EX A]: Bad

[EX Q]: Parts to assemble a BMX bike ?
[EX A]:
Bad