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: Even if the death penalty does not deter serial killers, it prevents them from killing again in society or in prison.
 Sent2: If the death penalty deters murder (as you claim) then why does Europe have a lower murder rate even though they've outlawed the death penalty?

SOLUTION: Not similar

PROBLEM: Sent1: Not to mention that the death penalty is more costly than simple life in prison in both money and time.
 Sent2: And no one said that life in prision is "much worse" then the death penalty.

SOLUTION: Not similar

PROBLEM: Sent1: It is proved that death penalty for such kind people is the simplest punishment.
 Sent2: There have been numerous people who were presumed innocent after execution because the evidence showed that they were not guilty.

SOLUTION:
Not similar