Problem: Boardwalk Hall, formally known as the "Historic Atlantic City Convention Hall", is an arena in Atlantic City along the boardwalk. Boardwalk Hall was Atlantic City's primary convention center until the opening of the Atlantic City Convention Center in 1997. The Atlantic City Convention Center includes 500,000 sq ft (46,000 m2) of showroom space, 5 exhibit halls, 45 meeting rooms with 109,000 sq ft (10,100 m2) of space, a garage with 1,400 parking spaces, and an adjacent Sheraton hotel. Both the Boardwalk Hall and Convention Center are operated by the Atlantic City Convention & Visitors Authority.
What hotel is adjacent to the Atlantic City Convention Center?
The answer is the following: Sheraton hotel

Problem: There are many styles of mandolin, but four are common, the Neapolitan or round-backed mandolin, the carved-top mandolin and the flat-backed mandolin. The round-back has a deep bottom, constructed of strips of wood, glued together into a bowl. The carved-top or arch-top mandolin has a much shallower, arched back, and an arched top—both carved out of wood. The flat-backed mandolin uses thin sheets of wood for the body, braced on the inside for strength in a similar manner to a guitar. Each style of instrument has its own sound quality and is associated with particular forms of music. Neapolitan mandolins feature prominently in European classical music and traditional music. Carved-top instruments are common in American folk music and bluegrass music. Flat-backed instruments are commonly used in Irish, British and Brazilian folk music. Some modern Brazilian instruments feature an extra fifth course tuned a fifth lower than the standard fourth course.
What are the four common styles of mandolins?
The answer is the following: the Neapolitan or round-backed mandolin, the carved-top mandolin and the flat-backed mandolin.

Problem: In December 2011, the system went into operation on a trial basis. It has started providing navigation, positioning and timing data to China and the neighbouring area for free from 27 December. During this trial run, Compass will offer positioning accuracy to within 25 meters, but the precision will improve as more satellites are launched. Upon the system's official launch, it pledged to offer general users positioning information accurate to the nearest 10 m, measure speeds within 0.2 m per second, and provide signals for clock synchronisation accurate to 0.02 microseconds.
What will improve the positioning accuracy of the Compass system?
The answer is the following: as more satellites are launched

Problem: As in other major American cities in the postwar era, construction of an extensive highway and freeway system around Detroit and pent-up demand for new housing stimulated suburbanization; highways made commuting by car easier. In 1956, Detroit's last heavily used electric streetcar line along the length of Woodward Avenue was removed and replaced with gas-powered buses. It was the last line of what had once been a 534-mile network of electric streetcars. In 1941 at peak times, a streetcar ran on Woodward Avenue every 60 seconds.
How many seconds did a streetcar run along Woodward Ave in 1941?
The answer is the following:
60