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 Q]: I can see that could be incidental rather than the purpose.
[EX A]: Invalid

[EX Q]: Tony Martin, who was convicted of murder for shooting in the back someone who was running away.
[EX A]: Invalid

[EX Q]: We must look into why the person raped a child or murdered a father.
[EX A]:
Valid