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.

Ex Input:
For decades we have proved drug cases by having a scientist who tests the drug submit an affidavit which says its cocaine or its marijuanawithout having to call the scientist to testify about his findings.

Ex Output:
Invalid

Ex Input:
The killers in the Columbine massacre obtained three guns via a straw purchase by another student, acquired their automatic from a gun dealer and purchased a fourth from a seperate student.

Ex Output:
Valid

Ex Input:
If anything, cops will come to where you live to take your guns, seeing as they work for the government.

Ex Output:
Valid