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.

Example input: 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.
Example output: Who believes Fagin's gang make wallets and handkerchiefs?.
Example explanation: 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.
Q: Passage: Plumbe designed the estate with five classes of houses. Although the houses were built to the same five basic designs, each street was given a distinct style of design and ornamentation. Varying mixes of red and yellow bricks, and variations in window design and ornamental motifs, were used to give each street a distinct identity. All were designed with front and back gardens. Corner houses were given distinctive designs and turrets.
The distribution of houses followed the traditional Victorian model of town planning. The larger first- and second-class houses were built in the centre, close to the church and school, while the more numerous third-, fourth-, and fifth-class houses were built in the estate's outskirts. Welch (2006) speculates that this segregation of housing was not Plumbe's intention; Plumbe himself was quoted in 1896 as saying that "I regret that it is necessary to separate the richer and more cultured classes from the poorer, owing to the prejudices which exist; and these prejudices exist on the part of the poor as well as on the part of the other class".Except for the corner houses, the houses were built in pairs, each sharing a porch with its neighbour. For many of the smaller fourth- and fifth-class houses, the doors were aligned at right angles to the facade of the house, so as not to open directly adjacently to their neighbours. All houses were designed with at least one parlour and with the kitchen, scullery, and toilet in separate rooms at the rear of the house; the first-class houses also had toilets upstairs. In line with the design principles of the time, the downstairs toilets were accessible only from the back gardens, and the houses were not fitted with separate bathrooms; baths were taken in a moveable bath located in the kitchen.
All houses were built with marble-mantelpieced fireplaces and flues. All houses were supplied with running water supplied from the New River, which flowed through Wood Green. However, not all houses were supplied with gas or mains electricity from the outset, the remainder being lit by candles or oil or paraffin lamps.Houses at Noel Park were deliberately designed to be relatively small, both for cheapness and to discourage tenants from taking on lodgers. Many of the larger houses at Shaftesbury Park had been sublet and split, and the practice went against the principles of the Artizans Company's founders. To discourage the practice at Queen's Park and Noel Park, cottage flats were built; these maintained the terraced facade, but split the house into upper and lower flats, each flat having a separate front door onto the street.
A:
What were the two locations of the houses that were split into upper and lowers flats and each flat had a separate front door onto the street?