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: After we get through that, if he still retains the death penalty, it's a lot cheaper to kill him than to keep him up 'til he dies in prison.

SOLUTION: Valid

PROBLEM: If you really think it's okay for convicts to be raped, I honestly feel bad for your lack of humanity.

SOLUTION: Invalid

PROBLEM: Beyler said that key testimony from a fire marshal at Willingham's trial was "hardly consistent with a scientific mind-set and is more characteristic of mystics or psychics.̢���

SOLUTION:
Invalid