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.

Just because the Chicago Tribune finds some "expert" in the field of arson investigation who examines paper evidence and says their may be cause for doubt does not mean that the man was innocent.
Invalid

Since I am not related to any death-row-inmate's victims (of murder, rape, molestation), I do not classify my desire to see them dead as vengeance.
Valid

So between 336 to 672 innocent people  have staistically been excecuted since Gregg Vs Georgia took place.

Valid