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.

Remember that gay marriage is not further down the line than straight marriage.
Valid

Societies define marriage, because they find it a valuable institution for many reasons, such as raising children, providing financial and legal protection for families, and other such good things.
Valid

A valid argument against incestuous marriage would not have as its only premise "Marriage is defined as a legal bond between a man and a woman who are not x-apart related."

Valid

