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.

Positive Example 1 -
Input: It is usually just as religiously important to same-sex couples to be married as it is for opposite-sex couples, and no one should be able to tell those people that the government cannot recognize their relationship.
Output: Valid

Positive Example 2 -
Input: We still don't have a government program of free quality childcare for working women.
Output: Invalid

Negative Example 1 -
Input: The only people who have problems with gays are the people who LET themselves have problems with gays.
Output: Invalid

Now complete the following example -
Input: If mental illness is a myth, the critics argue, so is physical illness[citation needed], because both categories have fuzzy boundaries and are to a large extent culturally determined.
Output: 


Answer: Invalid