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: They may not intend to incite those who are unstable enough to physically attack those who are deamed undesirable, but you cannot tell me they do not know that their words incite disdain.
Example Output: Invalid

Example Input: Then, why is it sad that "people do not like accepting that people are very different".
Example Output: Invalid

Example Input: So your saying that if gay people are allowed to marry...then marriage becomes pointless and heterosexual couples will stop having sex and our species will parish?
Example Output:
Valid