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:
Only heterosexual acts and unions can actually produce offspring - so gay unions aren't really producing new taxpayers and citizens at all - their relations with the opposite sex are producing new taxpayers and citizens.

Ex Output:
Valid


Ex Input:
Then it is argued that since A has property P, so

Ex Output:
Invalid


Ex Input:
Those people's religion would certainly not call it a "marriage".

Ex Output:

Valid