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: Those people who don't voice an opinion in favor of gay civil unions are enabling the discrimination between heterosexual and homosexual couples to continue.
Example Output: Valid

Example Input: It is the same thing with the same sex marriage because a man and a man or a woman and a woman should never be together.
Example Output: Valid

Example Input: And, going back to the general topic of this thread; even if homosexuality is completely genetic and unchangable it doesn't follow that we should recognize a homosexual marriage as deserving of equal priviledge as a heterosexual one.
Example Output:
Valid