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.

[EX Q]: Statement: Many federal CIOs, in the normal course of their own efforts, have already begun working along the lines of the advice provided in this guide. Choices:  1. Federal CIOs have not begun using the advice. 2. Federal CIOs have begun using the advice. 3. Federal CIOs have begun using the advice that was given to them.
[EX A]: 1

[EX Q]: Statement: West of the park is Nagamachi, the old samurai quarter. Choices:  1. The samurai quarter is still occupied, nearly 30,000 residents still call it home. 2. Nagamachi, the samurai domain, lies north of the park.  3. The old samurai quarter, known as Nagamachi, lies west.
[EX A]: 2

[EX Q]: Statement: A key reason that screening is not performed is the widely held perception that treatment is not effective. Choices:  1. A key reason that screening doesn't happen is the perception that treatment is the only route. 2. A key reason that screening doesn't happen is the perception that treatment doesn't work. 3. A key reason that screening doesn't happen is the perception that treatment doesn't work for people who drink recreationally.
[EX A]:
1