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: Gentilello suggested that clinical trials are important because they change practice. Choices:  1. Clinical trials have fundamentally changed the way surgery is done. 2. Clinical trials are worthless according to Gentilello because they don't change practice. 3. The value of clinical trials, as suggested by Gentilello, is in how they change practice.

2