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.

Some of the social changes we have experienced over the last century have made biology less important and people's social roles in creating families more important.
Valid

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.
Valid

If your religion or culture disallows gay marriage, that's fine.

Valid