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 support the death penalty because I feel that their are crimes and criminals so heinous that they deserve death.
[EX A]: Valid

[EX Q]: 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.
[EX A]: Invalid

[EX Q]: On the other hand, I might also agree to a program whereby questionable cases could be reviewed or maybe even excluded from the death-row purging process, leaving only those who clearly did commit the crime to be killed.
[EX A]:
Valid