TASK DEFINITION: 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.
PROBLEM: That way we can keep the sanctity of marriage between a man and a woman, and gays can still have a "union" with other gays.

SOLUTION: Valid

PROBLEM: There are several amendments guaranteeing rights that were not given before, and I can't see any reason why gay marriage should be any exception to this precedent.

SOLUTION: Valid

PROBLEM: There's also plenty of speculation that gays are more likely to be tested for and report cases of HIV infection than heterosexuals due to increased awareness programs targeted at gays in the United States.

SOLUTION:
Valid