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.

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


[Q]: How long does it take to become a parole officer ?
[A]: Good


[Q]: What is the niche of plants ?
[A]:
Good