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 only way to prove that rehabilitation has occurred is to parole a murderer.
answer:
Valid


question:
While tragic that we killed so many civilians, women, and children, the end result was probable saving of many lives, both American and Japanese.
answer:
Invalid


question:
However, the problem comes in trying to codify which people deserve the death penalty.
answer:

Valid