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: Some changes allowed different people to marry (blacks and whites, for example), while others expanded the rights of married people (like Federal tax breaks).

A: Valid
****
Q: But even if it weren't, that point is completely irrelevant because I have presented a perfectly plausible method of maintaining our current definition of the word "marriage" while still granting everyone equal rights.

A: Valid
****
Q: You're being a bit silly here--STDs are a direct result of unprotected (and sometimes protected) sex.

A:
Invalid
****