TASK DEFINITION: We would like you to classify each of the following sets of argument pairs (discussing Death Penalty) into either SIMILAR or NOT SIMILAR. A pair of arguments is considered SIMILAR if the arguments are about the same FACET (making the same argument), and is considered NOT SIMILAR if they do not have the same FACET. A FACET is a low level issue that often reoccurs in many arguments in support of the author's stance or in attacking the other author's position.
PROBLEM: Sent1: So should we be able to impose the sentence of life without parole, all the while understanding that we may have put an innocent man in prison for life?
Sent2: Back to reality, we convict the wrong person all the time, and we've set up a system where death penalty is actually more expensive than life in prison.

SOLUTION: Not similar

PROBLEM: Sent1: The argument for the death penalty as a deterrent has been proved wrong by the implementation of it through history.
Sent2: If there was another factor, then there would have already been arguments against this study using other studies produced by the opponents of the death penalty to proved this theory wrong.

SOLUTION: Not similar

PROBLEM: Sent1: The death penalty is simply a legally imposed punishment given to felons who commited crimes for which the death penalty is applicable.
Sent2: Yes, the death penalty should be use as a punishment.

SOLUTION:
Not similar