Question: One may claim that the judiciary has historically been the weakest of the three branches. In fact, its power to exercise judicial review—its sole meaningful check on the other two branches—is not explicitly granted by the U.S Constitution. The U.S. Supreme Court exercised its power to strike down congressional acts as unconstitutional only twice prior to the Civil War: in Marbury v. Madison (1803) and Dred Scott v. Sandford (1857). The Supreme Court has since then made more extensive use of judicial review.
Is there an answer to this question: How many times before World War I has the Supreme Court exercised its power to strike down congressional acts?

Answer: unanswerable


Question: By 1840, the Market Hall and Sheds, where fresh meat and produce were brought daily, became a hub of commercial activity. The slave trade also depended on the port of Charleston, where ships could be unloaded and the slaves bought and sold. The legal importation of African slaves had ended in 1808, although smuggling was significant. However, the domestic trade was booming. More than one million slaves were transported from the Upper South to the Deep South in the antebellum years, as cotton plantations were widely developed through what became known as the Black Belt. Many slaves were transported in the coastwise slave trade, with slave ships stopping at ports such as Charleston.
Is there an answer to this question: What year did the legal importation of slaves end?

Answer: 1808


Question: Houston has sports teams for every major professional league except the National Hockey League (NHL). The Houston Astros are a Major League Baseball (MLB) expansion team formed in 1962 (known as the "Colt .45s" until 1965) that made one World Series appearance in 2005. The Houston Rockets are a National Basketball Association (NBA) franchise based in the city since 1971. They have won two NBA Championships: in 1994 and 1995 under star players Hakeem Olajuwon, Otis Thorpe, Clyde Drexler, Vernon Maxwell, and Kenny Smith. The Houston Texans are a National Football League (NFL) expansion team formed in 2002. The Houston Dynamo are a Major League Soccer (MLS) franchise that has been based in Houston since 2006 after they won two MLS Cup titles in 2006 and 2007. The Houston Dash play in the National Women's Soccer League (NWSL). The Scrap Yard Dawgs, a women's pro softball team, is expected to play in the National Pro Fastpitch (NPF) from 2016.
Is there an answer to this question:  Until 1935 what were the Houston Astros called?

Answer: unanswerable


Question: Dell advertisements have appeared in several types of media including television, the Internet, magazines, catalogs and newspapers. Some of Dell Inc's marketing strategies include lowering prices at all times of the year, free bonus products (such as Dell printers), and free shipping to encourage more sales and stave off competitors. In 2006, Dell cut its prices in an effort to maintain its 19.2% market share. This also cut profit-margins by more than half, from 8.7 to 4.3 percent. To maintain its low prices, Dell continues to accept most purchases of its products via the Internet and through the telephone network, and to move its customer-care division to India and El Salvador.
Is there an answer to this question: What year did Dell up its prices to keep its market share?

Answer:
unanswerable