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 Input:
As I say this case does not fit the bill completely, but I'm sure similar cases must arise and they should be an exception.

Ex Output:
Invalid


Ex Input:
After all, absence of brain activity is considered legally dead in the medical field, so the start of brain activity should be the requirement for them to be legally alive.

Ex Output:
Invalid


Ex Input:
I am advocating life in prison without the option of parole.

Ex Output:

Valid