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.

[Q]: There have also been no scientifically documeted cases of gays changing their sexual orientation anymore than straights becoming gay.
[A]: Valid


[Q]: After all the sex that has happened out there, gay sex or straight anal sex (which actually has more participants than gay anal sex), if somebody could "get sick" from it, they would have by now.
[A]: Valid


[Q]: And don't let anyone tell you that because you oppose same sex marriage because your beliefs are derived from the bible that you are practicing religiously based discrimination.
[A]:
Valid