In this task, you're given a statement and three sentences as choices. Your job is to determine the neutral choice based on your inference from the statement and your commonsense knowledge. The neutral choice is a sentence that neither agrees nor disagrees with the statement. Indicate your answer as '1', '2', or '3', corresponding to the choice number of the selected sentence. If sentence X agrees with sentence Y, one's correctness follows from the other one. If sentence X disagrees with sentence Y, they can not be correct at the same time.
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Question: Statement: For example, to achieve 80 percent mercury reduction from a low sulfur bituminous coal using an ACI system with humidification will require a treatment rate of about 8 lb/million acf (MMacf). Choices: 1. Mercury levels can be reduced from bituminous coal with an ACI system. 2. This system is very expensive to install and operate. 3. There is no way to achieve more than a 20% reduction in mercury levels.

Answer: 2


Question: Statement: The city is built on hills by legend seven, but in fact many more providing several splendid vantage points. Choices: 1. The city is built inside of a deep valley. 2. The actual number of hills on which the city is built is 20. 3. According to the legend, the city is built on seven hills.

Answer: 2


Question: Statement: And that, to return to the question I posed earlier, is just the problem. Choices: 1. there is no problem to be considered. 2. that is just the problem. 3. there are other problems to be considered.

Answer:
3