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.

My argument makes it clear that innocent people need not be sentenced to death in order for the death penalty to be unjust.
Valid

Under the current system, people mostly get put in prison and have nothing to do.
Valid

Again... there is nearly never a fail-safe, sending an innocent man to death isn't something you can take back.

Valid