TASK DEFINITION: We would like you to classify each of the following sets of argument pairs (discussing Gun Control)  into either SIMILAR or NOT SIMILAR. A pair of arguments is considered SIMILAR if the arguments are about the same FACET (making the same argument), and is considered NOT SIMILAR if they do not have the same FACET. A FACET is a low level issue that often reoccurs in many arguments in support of the author's stance or in attacking the other author's position.
PROBLEM: Sent1: I think we recognize that gun control laws can reduce the number of criminals owning guns although not disarm every criminal.
 Sent2: Right now it is against the law for the government to keep a database of gun owners, that that law would have to be changed, and I think you also know this.

SOLUTION: Not similar

PROBLEM: Sent1: I think penfolds basic mentality is that nobody should have guns but criminals and police, and if you face a criminal with a gun, sorry about the bad luck.
 Sent2: I do not believe OTHERS should not have guns, I think criminals and psychos who are yet to convict a gun crime should not have guns.

SOLUTION: Not similar

PROBLEM: Sent1: This appeared to me to be an argument that self defense cannot exist if a gun is used.
 Sent2: The claim by the anti gun lobby that guns are used more often in crime than in self defence is and old one.

SOLUTION:
Not similar