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.

Input: Consider Input: Well, if that's a reason to ban homosexuals from marriage, then along the same line of thought, then any couple that is infertile or chooses not to have children should not be permitted to get married.

Output: Valid


Input: Consider Input: People with good hearts, that are great role models, and can contribute more than someone who sprnds their entire being trying to discriminate against them.

Output: Invalid


Input: Consider Input: Marriage is the cultural way to formalize the heterosexual bond which, itself, facilitates reproduction.


Output: Valid


