In this task, you are given a statement spoken by a politician in natural language. Your task is to generate the subject of the discussion for the given statement. The subject generated is not necessarily a part of the given input. Your answer should contain one or more words.

[EX Q]: A bill to advance the Keystone XL Pipeline is an earmark under House rules.
[EX A]: climate-change

[EX Q]: It took us four years to balance the budget. Then I gave you four surplus budgets for the first time in more than 70 years, paid $600 billion down on the national debt.
[EX A]: deficit

[EX Q]: The proposed Gogebic mine in northern Wisconsin could be extended as long as 21 miles.
[EX A]:
environment