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.

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.
Not similar

Sent1: If people are going to make a big deal out of two people of the same sex getting married, then people of different religions, people of no religion, even people guilty of adultery shouldn't be allowed to marry either.
 Sent2: The argument in favor of same-sex marriage is based on religion often as well; whole bunches of people hold religious beliefs which state that marriage is between any two people who are not related by family.
Not similar

Sent1: And since they claim HIV/AIDS is a consequence of being gay, do they want  to increase the risk of infection for straight women by insisting that such women be the only marriage partners gay men are allowed to have?
 Sent2: i agree with gay marriage because it is not fair to them that only man and women who are in love can only get married.

Not similar