TASK DEFINITION: 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.
PROBLEM: Marriage is indeed a 'straight thing', and gay groups have taken a wholesome institution and used it to validify their sexual vices.

SOLUTION: Valid

PROBLEM: I find the funniest thing about such studies is that everyone has heard of them and is sure something has been shown conclusively, but no one is quite sure when or where.

SOLUTION: Invalid

PROBLEM: The Marriage issue should be out of politicians and lawmakers.

SOLUTION:
Valid