Input: Read this: Mexico City offers an immense and varied consumer retail market, ranging from basic foods to ultra high-end luxury goods. Consumers may buy in fixed indoor markets, mobile markets (tianguis), from street vendors, from downtown shops in a street dedicated to a certain type of good, in convenience stores and traditional neighborhood stores, in modern supermarkets, in warehouse and membership stores and the shopping centers that they anchor, in department stores, big-box stores and in modern shopping malls.
Question: How is the retail market of Mexico City?

Output: immense and varied

Input: Read this: In September 1982, Prime minister Margaret Thatcher travelled to Beijing to negotiate with the Chinese government on the future of Britain's last major and most populous overseas territory, Hong Kong. Under the terms of the 1842 Treaty of Nanking, Hong Kong Island itself had been ceded to Britain in perpetuity, but the vast majority of the colony was constituted by the New Territories, which had been acquired under a 99-year lease in 1898, due to expire in 1997. Thatcher, seeing parallels with the Falkland Islands, initially wished to hold Hong Kong and proposed British administration with Chinese sovereignty, though this was rejected by China. A deal was reached in 1984under the terms of the Sino-British Joint Declaration, Hong Kong would become a special administrative region of the People's Republic of China, maintaining its way of life for at least 50 years. The handover ceremony in 1997 marked for many, including Charles, Prince of Wales, who was in attendance, "the end of Empire".
Question: When did Britain hand over Hong Kong to China?

Output: 1997

Input: Read this: "Milliken was perhaps the greatest missed opportunity of that period," said Myron Orfield, professor of law at the University of Minnesota. "Had that gone the other way, it would have opened the door to fixing nearly all of Detroit's current problems." John Mogk, a professor of law and an expert in urban planning at Wayne State University in Detroit, says, "Everybody thinks that it was the riots [in 1967] that caused the white families to leave. Some people were leaving at that time but, really, it was after Milliken that you saw mass flight to the suburbs. If the case had gone the other way, it is likely that Detroit would not have experienced the steep decline in its tax base that has occurred since then."
Question: At which school did Myron Orfield teach?

Output: University of Minnesota

Input: Read this: Education in Northern Ireland differs slightly from systems used elsewhere in the United Kingdom, but it is more similar to that used in England and Wales than it is to Scotland.
Question: Which countries have school systems very different from Northern Ireland?

Output:
unanswerable