Problem: Miami:

Miami and its suburbs are located on a broad plain between the Florida Everglades to the west and Biscayne Bay to the east, which also extends from Florida Bay north to Lake Okeechobee. The elevation of the area never rises above 40 ft (12 m) and averages at around 6 ft (1.8 m) above mean sea level in most neighborhoods, especially near the coast. The highest undulations are found along the coastal Miami Rock Ridge, whose substrate underlies most of the eastern Miami metropolitan region. The main portion of the city lies on the shores of Biscayne Bay which contains several hundred natural and artificially created barrier islands, the largest of which contains Miami Beach and South Beach. The Gulf Stream, a warm ocean current, runs northward just 15 miles (24 km) off the coast, allowing the city's climate to stay warm and mild all year.

What is the northern terminus of Biscayne Bay?
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A: Lake Okeechobee


Problem: Virgil:

Virgil is traditionally ranked as one of Rome's greatest poets. His Aeneid has been considered the national epic of ancient Rome from the time of its composition to the present day. Modeled after Homer's Iliad and Odyssey, the Aeneid follows the Trojan refugee Aeneas as he struggles to fulfill his destiny and arrive on the shores of Italy—in Roman mythology the founding act of Rome. Virgil's work has had wide and deep influence on Western literature, most notably Dante's Divine Comedy, in which Virgil appears as Dante's guide through hell and purgatory.

Where did Virgil write his works?
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A: unanswerable


Problem: Zinc:

Several dozen radioisotopes have been characterized. 65Zn, which has a half-life of 243.66 days, is the most long-lived radioisotope, followed by 72Zn with a half-life of 46.5 hours. Zinc has 10 nuclear isomers. 69mZn has the longest half-life, 13.76 h. The superscript m indicates a metastable isotope. The nucleus of a metastable isotope is in an excited state and will return to the ground state by emitting a photon in the form of a gamma ray. 61Zn has three excited states and 73Zn has two. The isotopes 65Zn, 71Zn, 77Zn and 78Zn each have only one excited state.

What does the superscript m represent?
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A: metastable isotope


Problem: Norfolk Island:

Disagreements over the island's relationship with Australia were put in sharper relief by a 2006 review undertaken by the Australian government. Under the more radical of two models proposed in the review, the island's legislative assembly would have been reduced to the status of a local council. However, in December 2006, citing the "significant disruption" that changes to the governance would impose on the island's economy, the Australian government ended the review leaving the existing governance arrangements unaltered.

When did the European government end their review on Norfolk Island?
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A:
unanswerable