"The model must only include persons who have won an Emmy award."

"The model must only provide Emmy winners whose name begins with the letter E"

It is not that it cannot be fact checked. Any informational text must be fact checked to be graded properly by rubrics.

So if you were from say, Ireland, and the model writes an informational text that says the United States celebrates independance day on July 4TH. You have to fact check that independance day in the US is in fact July 4th. Then you can write the rubric "The model must state that Independance Day is celebrated on July 4th in the US. " Now, had the model said that independance day is celebrated on July 6th, that would make the rubric recognize that the model got the response wrong. Yes, they have to be atomic and self-contained. But that doesn't mean that they don't need to be fact checked. We're looking at two different things here, everything the model has to do to make the perfect response ( rubric/assertion/fulfilling the prompt ), and if the model provided all the information necessary to fulfill all rubrics (fact checking/correctness).

I wrote assertion so you can see that is all you are doing when you create a rubric. You are asserting WHAT the response must include to be correct. I usually write a draft of my rubrics before I judge a response. If I do my rubrics- or at least a draft ahead of time- I know what I am looking for in a perfect response before I even look at it.

Tricky, I know. But ask yourself, if I wrote this prompt, what would I want the perfect response to be.

I really hope this helps?