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.
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Question: Well let me first get to this just so everyone will know which side of the gun issue im on, I am an avid gun owner and I support any laws that target criminals while unafecting lawfull gun owners.

Answer: Valid


Question: Under English common law, the Castle Doctrine was intended to be a narrow exception to the general duty to retreat.

Answer: Invalid


Question: My argument would be OK, since there is no means to facilitate the organization of the people then being "duly armed" with machine guns, rocket launchers and anti-tank missiles is not protected by the 2nd Amendment.

Answer:
Valid