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.

Just as there is no such thing as a "married bachelor," there is no such thing as "gay marriage."
Valid

But not allowing gay marriage hurts all homosexual couples to a greater extent than the prior.
Valid

For example, a married partner may be able to make medical decisions for a partner who is not capable of making his or her own choices.

Valid