Given the task definition and input, reply with output. 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.

Statement: um-hum i'm not familiar with that one Choices: 1. I don't know about that one. 2. Yeah I know that one. 3. I am familiar with other ones.
2