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:
Americans 100 years ago commonly argued that immigrants should not receive equal treatment under the law because they were allegedly morally inferior to native-born white Americans.
answer:
Valid


question:
If you consider sexual deviancy as normal then you can consider gay sex as normal.
answer:
Valid


question:
So my argument is that marriage laws provide protections that used to benefit women disproportionately (and if we go way back into the 19th century, the benefits went to men disproportionately).
answer:

Invalid