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: True, the courts have ruled that denying gay people the right to marry is a violation of their human rights.
Example Output: Valid

Example Input: Let me further expound on this, An important legal principle called the Conflict of Laws, allows states or nations that have a strong public policy exception to the laws of another state or nation, to enforce their own principles.
Example Output: Valid

Example Input: Simply because someone can change, doesn't mean that person should change.
Example Output:
Invalid