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.

Ex Input:
Nevertheless, I think that if people are using guns to kill people, the people using them are to blame, at least more so than anyone else.

Ex Output:
Invalid


Ex Input:
Hetero and homosexual couples should have equal protection under the law.

Ex Output:
Valid


Ex Input:
Marriage is one of those things that falls into the category of social mores.

Ex Output:

Valid