In this task, you're given passages that contain mentions of names of people, places, or things. Some of these mentions refer to the same person, place, or thing. Your job is to write questions that evaluate one's understanding of such references. Good questions are expected to link pronouns (she, her, him, his, their, etc.) or other mentions to people, places, or things to which they may refer. Do not ask questions that can be answered correctly without understanding the paragraph or having multiple answers. Avoid questions that do not link phrases referring to the same entity. For each of your questions, the answer should be one or more phrases in the paragraph, and it should be unambiguous.

Let me give you an example: Passage: Nearing London, Oliver encounters Jack Dawkins, a pickpocket more commonly known by the nickname the "Artful Dodger", and his sidekick, a boy of a humorous nature named Charley Bates, but Oliver's innocent and trusting nature fails to see any dishonesty in their actions. The Dodger provides Oliver with a free meal and tells him of a gentleman in London who will "give him lodgings for nothing, and never ask for change". Grateful for the unexpected assistance, Oliver follows the Dodger to the "old gentleman's" residence. In this way Oliver unwittingly falls in with an infamous Jewish criminal known as Fagin, the gentleman of whom the Artful Dodger spoke. Ensnared, Oliver lives with Fagin and his gang of juvenile pickpockets in their lair at Saffron Hill for some time, unaware of their criminal occupations. He believes they make wallets and handkerchiefs.
The answer to this example can be: Who believes Fagin's gang make wallets and handkerchiefs?.
Here is why: This question is based on the following sentence in the passage "He believes they make wallets and handkerchiefs". It evaluates the understanding that the pronoun "he" refers to name "Oliver". You can ask questions like this one about most pronouns in a paragraph.

OK. solve this:
Passage: Holkham Hall ( or )  is an 18th-century country house located adjacent to the village of Holkham, Norfolk, England. The house was constructed in the Palladian style for The 1st Earl of Leicester (fifth creation) by the architect William Kent, aided by the architect and aristocrat Lord Burlington.
Holkham Hall is one of England's finest examples of the Palladian revival style of architecture, and the severity of its design is closer to Palladio's ideals than many of the other numerous Palladian style houses of the period. The Holkham Estate was built up by Sir Edward Coke, the founder of his family fortune. He bought Neales manor in 1609, though never lived there, and many other purchases of land in Norfolk to endow to his six sons. His fourth son, John, inherited the land and married heiress Meriel Wheatley in 1612. They made Hill Hall their home and by 1659 John had complete ownership of all three Holkham manors. It is the ancestral home of the Coke family, the Earls of Leicester of Holkham.
The interior of the hall is opulently, but by the standards of the day, simply decorated and furnished. Ornament is used with such restraint that it was possible to decorate both private and state rooms in the same style, without oppressing the former. The principal entrance is through the Marble Hall, which is in fact made of pink Derbyshire alabaster; this leads to the piano nobile, or the first floor, and state rooms. The most impressive of these rooms is the Saloon, which has walls lined with red velvet. Each of the major state rooms is symmetrical in its layout and design; in some rooms, false doors are necessary to fully achieve this balanced effect.
Answer:
What is the name of the building that uses false doors in some rooms?