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]: There have been numerous people who were presumed innocent after execution because the evidence showed that they were not guilty.
[A]: Valid

[Q]: Or are you just saying that ALL blacks are discriminated against no matter what, even if the judge is black.
[A]: Invalid

[Q]: I think the death penalty is one of the several punishment in the law system, we shouldn't consider it like something insane, and moreover it's normal in some countries nowadays.
[A]:
Valid