Definition: In this task, you're given a statement, and three sentences as choices. Your job is to determine which sentence clearly disagrees with the statement. Indicate your answer as '1', '2', or '3' corresponding to the choice number of the selected sentence.
Input: Statement: Instead of our regular class work, let's go outside under the big, old dead elm and show a filmstrip, i.e., let's quote a few highlights from Tim Weiner's dark and charming New York Times obit titled Sidney Gottlieb, 80, Dies, Took LSD to CIA, an account of the man who ran MKUltra, a project that dosed unsuspecting Americans with hallucinogenic drugs for charity. Choices:  1. We could learn much more from the filmstrip today than by doing classwork. 2. Since it's raining outside, we should stay in and do our regular classwork. 3. Let's skip classwork today and go outside to watch a movie by the elm tree.

2