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.

Example Input: Churches and other religious bodies are free to espouse what they choose, and people are free to believe as they choose about same-sex relations and marriage, and they are free to believe that such relations are sinful.
Example Output: Valid

Example Input: In colonial times the Speaker of the House, Sal DiMasi, ringleader of these legislative charlatans, would have been dragged down the steps of the State House, tarred and feathered, then banished to Canada.
Example Output: Invalid

Example Input: a brother-sister marriage is not an extreme argument as the reasons you use should apply to those kind of marriages too if you wish to talk about it in terms of "equal protection".
Example Output:
Valid