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.

Ex Input:
If so, then states need at least a rational basis for making certain marriages illegal, and there is no rational basis for making marriage between people of the same sex illegal.

Ex Output:
Valid


Ex Input:
The usual reason given for banning first-cousin marriage is because there is a risk of offspring of first cousins having biological problems.

Ex Output:
Valid


Ex Input:
Its first, totemic, phase already brings with it the prohibition against an incestuous choice of object, and this is perhaps the most drastic mutilation which man��_��__��_��__s erotic life has in all time experienced.

Ex Output:

Invalid