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: Research  improving existing screening questionnaires Choices:  1. Research has improved the screening questions that are given to test subjects upon meeting. 2. Research has failed to improve the screening questions. 3. Research has improved the screening questions.

2