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: Additionally, Las Vegas had been made a part of Nevada's new Clark County in 1909, a year when the legislature also outlawed gambling. Choices:  1. Las Vegas was not considered part of Clark County until 1969. 2. Before 1909, Las Vegas was considered its own county. 3. Las Vegas became part of the new Clark County in the same year gambling was outlawed. 

1