Definition: 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.
Input: Statement: A few years later economists such as Paul Romer and Philippe Aghion applied related ideas to technological change and economic growth, giving birth to the new growth theory; and the ripples spread ever outward. Choices: 1. It has been argued by many that Paul Romer contributed slightly more to the new growth theory. 2. Philippe Aghion applied the ideas to economic growth but Paul Romer did not. 3. Philippe Aghion and Paul Romer gave birth to the new growth theory.

1