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.
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Question: If you're arguing for a general principle (eg that Capital punishment is acceptible and effective) then you have to argue in the general case:

Answer: Valid


Question: We are going to assume for the purpose of this that the person the guy saw was NOT Jim.

Answer: Invalid


Question: In fact mudkipz, many people would prefer the death penalty of life in jail.

Answer:
Valid