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.

if someone commits any crime, then they are a criminal by definition and should die.
Valid

Given the strong reasons for imposition of life without parole for certain cases, the risk of an innocent suffering that would have to be acceptable.
Valid

There are many abstracts (short summaries of the entire paper) printed in this link.

Invalid