Given the task definition and input, reply with output. 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: that marriage itself is optional, not the norm ��_��__��_��__��_��__ that marriage is for heroes, and since you and I aren��_��__��_��__t heroic, we must not be called to marry.
 Sent2: As Stanley Kurtz convincingly argues, however, the slippery slope following gay marriage will lead to polyamory rather than traditional polygamy, because ��_��__��_��__��_��__what gay marriage is to homosexuality, group marriage is to bisexuality:��_��__��_��__

Not similar