TASK DEFINITION: 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.
PROBLEM: I will agree with you on one point though; A heart of evil resides in those who would presume they can undermine, subvert, or take away another indivdiual's rights as are enumerated in the U.S. Constitution...

SOLUTION: Valid

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

SOLUTION: Invalid

PROBLEM: England and the Netherlands have not avoided these sinister voices advocating gun violence by restricting guns.

SOLUTION:
Valid