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]: I trust the jury, and the trial / appeals process that we use prior to execution (although the appeals process needs some streamlining).
[EX A]: Valid

[EX Q]: When the point that someone on death row was saved by DNA is brought up, it shows that system works because it has saved their life.
[EX A]: Valid

[EX Q]: You've still failed to give a single instance where someone was let out because of a "liberal" judge
[EX A]:
Valid