instruction:
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.
question:
We are not longer primitive, so we should allow any couple to marry, as we already allow with straight couples who do not have children.
answer:
Valid


question:
Marriage is privilege not a right, because not every heterosexual couple even gets granted the right to marry... the state has a right to regulate what impacts the welfare of the union as whole.
answer:
Valid


question:
After all the sex that has happened out there, gay sex or straight anal sex (which actually has more participants than gay anal sex), if somebody could "get sick" from it, they would have by now.
answer:

Valid