We would like you to assess the QUALITY of each of the following argument (discussing Gay Marriage) 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 gay marriage. An invalid argument is a phrase that cannot be interpreted as an argument or not on the topic of gay marriage.

Input: Consider Input: And people who oppose gay marriage, what's the difference between giving equal rights through a civil union and marriage?

Output: Valid


Input: Consider Input: HOW does that lead to ANY conclusion that "polygamy" is the solution???

Output: Invalid


Input: Consider Input: A variety of research has also been done on the issue of comparing parenting of gay parents to straight parents, and gays are proven to be just as good parents as straights.


Output: Valid