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]: As I say this case does not fit the bill completely, but I'm sure similar cases must arise and they should be an exception.
[A]: Invalid


[Q]: It's cheaper to shoot them on site like Judge Dredd would...It's cheaper to let them go and let the victims' families take care of the problem.
[A]: Valid


[Q]: Even if the death penalty does decrease crime the error rate in capital cases is too great to tolerate in a civilized society.
[A]:
Valid