instruction:
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.
question:
The usual reason given for banning first-cousin marriage is because there is a risk of offspring of first cousins having biological problems.
answer:
Valid


question:
Well, if we decide to make incest not taboo, we will have a different discussion, one that doesn't have a bearing on gay marriage or inter-racial marriage.
answer:
Valid


question:
These recognitions are not only federal but vary state to state, for instance some states recognize 1st cousin marriages while others don't, as I recall, the age of consent to marry also differs among states.
answer:

Valid