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: Murder is a moral issue... yet condemned murderers may marry the consenting adult partner of their choice.
Example Output: Valid

Example Input: Statistically, it's the people who aren't adopting because the people who can accidentally have children don't always accidently have children, and those who do, aren't always bad parents.
Example Output: Invalid

Example Input: However, many teenagers who get pregnant didn't truly love their partners, just as many couples who truly love each other can not reproduce children due to infertility problems.
Example Output:
Invalid