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: Marriage is privilege not a right, because not every heterosexual couple even gets granted the right to marry... the state has a right to regulate what impacts the welfare of the union as whole.
Example Output: Valid

Example Input: As for the life expectancy ones a lot of the behaviors are hardly limited to homosexuality and their inclusion makes me wonder about the validity of that survey too as well as the huge gap.
Example Output: Invalid

Example Input: The requirement that has always existed in Society is not that couples MUST procreate, but that they qualify as a normal nuclear family.
Example Output:
Valid