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.

The movement for gay rights and LGBT equality is doomed to failure, or at the very least a fatally slanted naming convention (equality is equal if we are both trying to be like a standard model).
Valid

Evidently, they want the right to marry only because they do not want heterosexuals to have something they can��_��__��_��__t have.
Valid

Why shouldn't they be given the right to marry, people with disorders that will prevent them having children can marry, people with disorders that would seriously harm any child they have can marry.

Valid