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]: Personally, I've a big problem with the death penalty, namely that it has been applied to entirely innocent people.
[A]: Valid


[Q]: The human nervous system is not fully developed until adulthood, therefore the ability to appreciate right from wrong, understand consequences of actions and mediate impulse control (among other things) differs between children and adults.
[A]: Invalid


[Q]: I'm not saying that I wouldn't want the murderer to suffer, but there has to be a way to get over that phase of revenge, since it does nothing but tarnish the human race.
[A]:
Valid


