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

Example Input: Lastly gay isn't a civil right, you don't have a right to be gay.
Example Output: Valid

Example Input: This does NOT mean that I think they have it easy (in this country).
Example Output:
Invalid