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.

[Q]: It costs far more to execute a person than to keep him or her in prison for life.
[A]: Valid


[Q]: It wouldn't shock me if someone committed murder JUST to get those things.
[A]: Valid


[Q]: Defense attorneys acknowledged that Akbar carried out the attack but argued he was too mentally ill to have premeditated it and was fueled by emotion.
[A]:
Invalid