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: So, seems to me that when you make death a quick (as in timely) and certain punishment, there is most definitely a deterent effect.
Example Output: Valid

Example Input: it has been proven time and again prisons don't rehabilitate, keeping someone in prision for their entire life in prision is less human than the death penalty.
Example Output: Valid

Example Input: Yes certain people have a tendancy to do certain things.
Example Output:
Invalid