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: Prehistoric cultures flourished first in the north and in today's Alentejo region of south-central Portugal. Choices:  1. North is one of the regions where prehistoric cultures failed to grow. 2. Today's Alentejo region of south-central Portugal and the north is where the prehistoric cultures flourished. 3. Prehistoric cultures flourished in many territories of today's countries, not only Portugal.

1