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: Straight marriage will be less meaningful if gay marriage were allowed; the sanctity of Britney Spears' 55-hour just-for-fun marriage would be destroyed.
Example Output: Valid

Example Input: If the ony argument against it is a diversion fallacy, a false analogy, a strawman, or a false dilemma, we don't have an argument, and straight and Christian marriages should be allowed.
Example Output: Valid

Example Input: But let us not forget the more fundamental point that same-sex marriage does not encourage promiscuity; it does just the opposite.
Example Output:
Valid