instruction:
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.
question:
The reason why I'm for death penalty is because some people can be so dangerous fir the society, like serial murderer or maniac, so that they must be punished by this method.
answer:
Valid


question:
The chance of being killed in prison sounds to me like a better deterrent than capital punishment.
answer:
Valid


question:
I can assure you that I have no elephant repellant and that I do not duel.
answer:

Invalid