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.

Example Input: I support the death penalty, but feel there needs to be a better system of checks and balances to ensure each individual gets a fair trial using all evidentiary methods available.
Example Output: Valid

Example Input: It's only expensive due to the idiots who think keeping a truly twisted criminal alive is a "humane" thing to do.
Example Output: Valid

Example Input: If I could be satisfactorily convinced that a murderer had ZERO chance of committing another crime, I might be convinced to do away with the death penalty.
Example Output:
Valid