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.

[EX Q]: That could be considered Cruel and Unusual Punishment, it could mess with the persons mind.
[EX A]: Valid

[EX Q]: Unless some solid benifit can be shown for killing them, it is simply a childish act of revenge.
[EX A]: Valid

[EX Q]: BUT it is not apparent that death penalty lower crime rate.
[EX A]:
Valid