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: 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 solution: 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.

Problem: Passage: Palmyra began as a small settlement near the Efqa spring on the southern bank of Wadi al-Qubur. The settlement, known as the Hellenistic settlement, had residences expanding to the wadi's northern bank during the first century. Although the city's walls originally enclosed an extensive area on both banks of the wadi, the walls rebuilt during Aurelian's reign surrounded only the northern-bank section. Most of the city's monumental projects were built on the wadi's northern bank, among them is the Temple of Bel, on a tell which was the site of an earlier temple (known as the Hellenistic temple). However, excavation supports the theory that the tell was originally located on the southern bank, and the wadi was diverted south of the tell to incorporate the temple into Palmyra's late first and early second century urban organization on the north bank.Also north of the wadi was the Great Colonnade, Palmyra's 1.1-kilometre-long (0.68 mi) main street, which extended from the Temple of Bel in the east, to the Funerary Temple no.86 in the city's western part. It had a monumental arch in its eastern section, and a tetrapylon stands in the center. The Baths of Diocletian, built on the ruins of an earlier building which might have been the royal palace, were on the left side of the colonnade. Nearby were residences, the Temple of Baalshamin, and the Byzantine churches, which include "Basilica IV", Palmyra's largest church. The church is dated to the Justinian age, its columns are estimated to be 7 metres (23 ft) high, and its base measured 27.5 by 47.5 metres (90 by 156 ft).The Temple of Nabu and the Roman theater were built on the colonnade's southern side. Behind the theater were a small senate building and the large Agora, with the remains of a triclinium (banquet room) and the Tariff Court. A cross street at the western end of the colonnade leads to the Camp of Diocletian, built by Sosianus Hierocles (the Roman governor of Syria). Nearby are the Temple of Al-lat and the Damascus Gate.
Solution: Which church's base measured 27.5 by 47.5 metres (90 by 156 ft)?