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.

Example Input: Some changes allowed different people to marry (blacks and whites, for example), while others expanded the rights of married people (like Federal tax breaks).
Example Output: Valid

Example Input: So try, for the moment, to understand that your view of a homosexual is only a small piece of who that person is; they are not as different from the next person as you seem to believe.
Example Output: Valid

Example Input: 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:��_��__��_��__
Example Output:
Valid