Problem: What has advantages over land-based mining? Answer the above question based on the context below: The seabed contains enormous reserves of minerals which can be exploited by dredging. This has advantages over land-based mining in that equipment can be built at specialised shipyards and infrastructure costs are lower. Disadvantages include problems caused by waves and tides, the tendency for excavations to silt up and the washing away of spoil heaps. There is a risk of coastal erosion and environmental damage. Seafloor massive sulphide deposits are potential sources of silver, gold, copper, lead and zinc and trace metals since their discovery in the 1960s. They form when geothermally heated water is emitted from deep sea hydrothermal vents known as "black smokers". The ores are of high quality but prohibitively costly to extract. Small scale mining of the deep sea floor is being developed off the coast of Papua New Guinea using robotic techniques, but the obstacles are formidable.There are large deposits of petroleum, as oil and natural gas, in rocks beneath the seabed. Offshore platforms and drilling rigs extract the oil or gas and store it for transport to land. Offshore oil and gas production can be difficult due to the remote, harsh environment. Drilling for oil in the sea has environmental impacts. Animals may be disorientated by seismic waves used to locate deposits, probably causing the beaching of whales. Toxic substances such as mercury, lead and arsenic may be released. The infrastructure may cause damage, and oil may be spilt.Large quantities of methane clathrate exist on the seabed and in ocean sediment at a temperature of around 2 C (36 F) and these are of interest as a potential energy source. Some estimates put the amount available at between one and 5 million cubic kilometres (0.24 to 1.2 million cubic miles). Also on the seabed are manganese nodules formed of layers of iron, manganese and other hydroxides around a core. In the Pacific these may cover up to 30 percent of the deep ocean floor. The minerals precipitate from seawater and grow very slowly. Their commercial extraction for...

A: dredging

Problem: What is the alias of the person aunt Hortense fears is a fortune hunter? Answer the above question based on the context below: At a St. Louis opera house in 1860, a singer in blackface named Jerry Barton, known as "King of the Minstrels", comes backstage and asks his sweetheart, Lettie Morgan, to elope. Lettie's Aunt Hortense, fearing that Barton is a fortune hunter, tells Lettie she is not the heiress she thought she was and that she has been living off her aunt's charity. With no fortune to hunt, Barton informs Lettie that an artist cannot be burdened with the responsibility of a wife. Outside the opera house, Lettie meets a chorus girl named Honey, who is preparing to leave with her theatrical troupe in a caravan heading West. When the troupe's producer mistakes Lettie for the star, she joins the group as "Mary Varden". The troupe's wagon train is escorted by Captain Tex Autry of the U.S. Cavalry and his singing plainsmen. The troupe misses the wagon train, however, and must travel alone. On their way to San Francisco, the caravan is ambushed by a gang of thieves. Tex and his men arrive on the scene and following a gunfight, the gang is chased off. After Tex saves Lettie from a runaway wagon, he comments on the foolishness of risking his men's lives for a bunch of "crazy showgirls". Angered by his insolence, Lettie decides to walk rather than ride with Tex. Eventually she gets tired and asks Tex if she can ride with him. The troupe arrives safely at Fort Henry, which is run by Colonel Seward.

A: King of the Minstrels

Problem: What are the names of the couple who watch the suitcase fall off a baggage cart onto the runway and break open? Answer the above question based on the context below: Johnny Clay is a veteran criminal planning one last heist before settling down and marrying Fay. He plans to steal $2 million from the money-counting room of a racetrack during a featured race. He assembles a team consisting of a corrupt cop, a betting window teller to gain access to the backroom, a sharpshooter to shoot the favorite horse during the race to distract the crowd, a wrestler to provide another distraction by provoking a fight at the track bar, and a track bartender. George Peatty, the teller, tells his wife Sherry about the impending robbery. Sherry is bitter at George for not delivering on the promises of wealth he once made her, so George hopes telling her about the robbery will placate and impress her. Sherry does not believe him at first but, after learning that the robbery is real, enlists her lover Val Cannon to steal the money from George and his associates. The heist is successful, although the sharpshooter is shot and killed by a security guard. The conspirators gather at the apartment where they are to meet Johnny and divide the money. Before Johnny arrives, Val appears and holds them up. A shootout ensues and a badly wounded George emerges as the only man standing. He goes home and shoots Sherry before collapsing. Johnny, on his way to the apartment, sees George staggering in the street and knows that something is wrong. He buys the biggest suitcase he can find to put the money in (and struggles to lock it properly). At the airport Johnny and Fay are not allowed to take the case on their flight due to its size. Instead, they must check it as regular luggage. Johnny reluctantly complies. While waiting to board the plane the couple watch the suitcase fall off a baggage cart onto the runway, break open, and the loose banknotes scattered and then swept away by the backdraft from the aircraft's propellers.

A:
Fay