Place an X in Each Blank Below That Is Associated

Short Answer

Place an X in each blank below that is associated with a conclusion that would require the closed-world assumption in the context of a database that contained a list of subscribers to the New York Times.
_____ John Doe subscribes to the New York Times.
_____ John Doe does not subscribe to the New York Times.
_____ Either Mary Doe or John Doe does not subscribe to the New York Times.
_____ Either Mary Doe or John Doe subscribes to the New York Times.