TASK DEFINITION: We would like you to assess the QUALITY of each of the following argument (discussing Death Penalty) and determine if the argument is Valid or Invalid. A valid argument is clearly interpretable and either expresses an argument, or a premise or a conclusion that can be used in an argument for the topic of death penalty. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of death penalty.
PROBLEM: When the point that someone on death row was saved by DNA is brought up, it shows that system works because it has saved their life.

SOLUTION: Valid

PROBLEM: I believe that we should attempt to prevent suicide in the general population.

SOLUTION: Invalid

PROBLEM: That would mean most of the old kingdoms from the past were uncivilized because hangings were a very popular way of executing criminals.

SOLUTION:
Valid