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.

People have been found out to be innocent after the death penalty ha already been carried out....
Valid

If there was a justice system that was equally fair to all accused, made no mistakes and only executed the guilty, proponents of the death penalty could rightly cry, "Fry 'um up".
Valid

If somebody is completely innocent and they are executed for a crime they didn't commit (which, with forensics these days, probably will never happen again), that is a problem.

Valid