input question: Extract the answer to the question from the following context. Question: How long has child labor been a problem throughout the world Context: Biggeri and Mehrotra have studied the macroeconomic factors that encourage child labour. They focus their study on five Asian nations including India, Pakistan, Indonesia, Thailand and Philippines. They suggest that child labour is a serious problem in all five, but it is not a new problem. Macroeconomic causes encouraged widespread child labour across the world, over most of human history. They suggest that the causes for child labour include both the demand and the supply side. While poverty and unavailability of good schools explain the child labour supply side, they suggest that the growth of low-paying informal economy rather than higher paying formal economy is amongst the causes of the demand side. Other scholars too suggest that inflexible labour market, sise of informal economy, inability of industries to scale up and lack of modern manufacturing technologies are major macroeconomic factors affecting demand and acceptability of child labour.???
output answer: over most of human history

Extract the answer to the question from the following context. Question: What part of Utrecht has not changed much? Context: Another landmark is the old centre and the canal structure in the inner city. The Oudegracht is a curved canal, partly following the ancient main branch of the Rhine. It is lined with the unique wharf-basement structures that create a two-level street along the canals. The inner city has largely retained its Medieval structure, and the moat ringing the old town is largely intact. Because of the role of Utrecht as a fortified city, construction outside the medieval centre and its city walls was restricted until the 19th century. Surrounding the medieval core there is a ring of late 19th- and early 20th-century neighbourhoods, with newer neighbourhoods positioned farther out. The eastern part of Utrecht remains fairly open. The Dutch Water Line, moved east of the city in the early 19th century required open lines of fire, thus prohibiting all permanent constructions until the middle of the 20th century on the east side of the city.
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Answer: inner city

Q: Extract the answer to the question from the following context. Question: How were the defenses prepared? Context: From early 1944 until the days leading up to the invasion, Kuribayashi transformed the island into a massive network of bunkers, hidden guns, and 11 mi (18 km) of underground tunnels. The heavy American naval and air bombardment did little but drive the Japanese further underground, making their positions impervious to enemy fire. Their pillboxes and bunkers were all connected so that if one was knocked out, it could be reoccupied again. The network of bunkers and pillboxes greatly favored the defender.
A: Kuribayashi transformed the island into a massive network of bunkers, hidden guns, and 11 mi (18 km) of underground tunnels

Question: Extract the answer to the question from the following context. Question: What specialty was provided by the impressive invention? Context: The tide-predicting machine invented by Sir William Thomson in 1872 was of great utility to navigation in shallow waters. It used a system of pulleys and wires to automatically calculate predicted tide levels for a set period at a particular location.
Answer: tide-predicting

[Q]: Extract the answer to the question from the following context. Question: What was the main point of the Human Rights Report? Context: The 2009 Human Rights Report by the United States Department of State noted that human rights in CAR were poor and expressed concerns over numerous government abuses. The U.S. State Department alleged that major human rights abuses such as extrajudicial executions by security forces, torture, beatings and rape of suspects and prisoners occurred with impunity. It also alleged harsh and life-threatening conditions in prisons and detention centers, arbitrary arrest, prolonged pretrial detention and denial of a fair trial, restrictions on freedom of movement, official corruption, and restrictions on workers' rights.
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[A]: major human rights abuses

Problem: Given the question: Extract the answer to the question from the following context. Question: In what city can you find the world's oldest car factory building that is open the the public? Context: Many of the area's prominent museums are located in the historic cultural center neighborhood around Wayne State University and the College for Creative Studies. These museums include the Detroit Institute of Arts, the Detroit Historical Museum, Charles H. Wright Museum of African American History, the Detroit Science Center, as well as the main branch of the Detroit Public Library. Other cultural highlights include Motown Historical Museum, the Ford Piquette Avenue Plant museum (birthplace of the Ford Model T and the world's oldest car factory building open to the public), the Pewabic Pottery studio and school, the Tuskegee Airmen Museum, Fort Wayne, the Dossin Great Lakes Museum, the Museum of Contemporary Art Detroit (MOCAD), the Contemporary Art Institute of Detroit (CAID), and the Belle Isle Conservatory.
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The answer is:
Detroit