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]: And no, I do not claim that there are trials that can determine innocence after execution...we hold those while they are alive, and before they are sentenced to death.
[EX A]: Valid

[EX Q]: Texas' system of capital punishment is less than a quarter the cost of housing a criminal for life.
[EX A]: Valid

[EX Q]: As for the OP I have already commented on it by disagreeing with your suggestions (from which you now seem to be shying away).
[EX A]:
Invalid