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:
Environment plays a role to, some people just were not raised or experienced things that led them to developing anything beyond "normal" empathy.

Ex Output:
Invalid


Ex Input:
That's a real adult attitude when dealing with an enemy who has vowed to NEVER STOP THEIR COWARDLY ATTACKS ON CIVILIANS UNTIL THEY HAVE UTTERLY AND TOTALLY DESTROYED US.

Ex Output:
Invalid


Ex Input:
Straight people have marriages gay people have domestic partnerships they are practically the same thing why change it there's really no need to.

Ex Output:

Valid