instruction:
We would like you to classify each of the following sets of argument pairs (discussing Gay Marriage)  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.
question:
Sent1: If there are cases where we can not determine what sex a person is, how can we determine if they are homosexual or not?
 Sent2: I have seen only two arguments (and one of them is restated here) for gay marriage to not be a thing: we have to protect the sanctity of marriage or marriage should only be for people who can reproduce.
answer:
Not similar


question:
Sent1: Those who see marriage today as a legal right would continue to see it as such.
 Sent2: Lesbians and gays can be joined in a legal ceremony, recognized by church and state, but it doesn't have to be called a "marriage".
answer:
Not similar


question:
Sent1: Even with lesbian and gay marriages being performed and recognized in some states, the Federal Defense of Marriage Law prohibits the federal government from recognizing gay and lesbian relationships.
 Sent2: The government does not specifically prohibit the legal marriage of gay people.
answer:

Similar