instruction:
We would like you to assess the QUALITY of each of the following argument (discussing Gun Control) 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 gun control. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of gun control.
question:
JUSTICE STEVENS believes that the unitary meaning of ���keep and bear Arms��� is established by the Second Amendment's calling it a ���right��� (singular) rather than ���rights��� (plural).
answer:
Valid


question:
'The Chicago case is unlikely to have much practical impact on most gun laws regardless of how the court rules,' said Paul Helmke, president of the Brady Center to Prevent Gun Violence.
answer:
Valid


question:
I think you overestimate the risk, for most folks, of walking around without a gun.
answer:

Valid