Teacher:In this task, you're given a statement and three sentences as choices. Your job is to determine the neutral choice based on your inference from the statement and your commonsense knowledge. The neutral choice is a sentence that neither agrees nor disagrees with the statement. Indicate your answer as '1', '2', or '3', corresponding to the choice number of the selected sentence. If sentence X agrees with sentence Y, one's correctness follows from the other one. If sentence X disagrees with sentence Y, they can not be correct at the same time.
Teacher: Now, understand the problem? Solve this instance: Statement: The Soviets themselves imprisoned some 1.5 million Poles in labor camps of their own and eliminated potential troublemakers through actions like the Katyn massacre, in which 4,500 Polish military officers were summarily executed. Choices: 1. The Soviet Union carried out the murder and imprisonment of many Polish individuals. 2. Poland never suffered at the hands of the Soviet Union. 3. During the 1950s, the Soviet Union put Poles in prison camps and executed around 4500 Polish military officers.
Student:
3