Problem: Bird:

All modern birds lie within the crown group Aves (alternately Neornithes), which has two subdivisions: the Palaeognathae, which includes the flightless ratites (such as the ostriches) and the weak-flying tinamous, and the extremely diverse Neognathae, containing all other birds. These two subdivisions are often given the rank of superorder, although Livezey and Zusi assigned them "cohort" rank. Depending on the taxonomic viewpoint, the number of known living bird species varies anywhere from 9,800 to 10,050.

What is the number range of living bird species?
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A: 9,800 to 10,050


Problem: The town was sacked in 1338 by French, Genoese and Monegasque ships (under Charles Grimaldi, who used the plunder to help found the principality of Monaco). On visiting Southampton in 1339, Edward III ordered that walls be built to 'close the town'. The extensive rebuilding—part of the walls dates from 1175—culminated in the completion of the western walls in 1380. Roughly half of the walls, 13 of the original towers, and six gates survive.
What principality did Grimaldi set up with the profits from plundering Southampton?
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Answer: Monaco


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
On September 6, 2006, Sony announced that PAL region PlayStation 3 launch would be delayed until March 2007, because of a shortage of materials used in the Blu-ray drive. At the Tokyo Game Show on September 22, 2006, Sony announced that it would include an HDMI port on the 20 GB system, but a chrome trim, flash card readers, silver logo and Wi-Fi would not be included. Also, the launch price of the Japanese 20 GB model was reduced by over 20%, and the 60 GB model was announced for an open pricing scheme in Japan. During the event, Sony showed 27 playable PS3 games running on final hardware.
How many playable games did the PlayStation 3 by the time it arrived at the 2005 Tokyo Game Show?
A: unanswerable


Context and question: After World War II Hudson's realized that the limited parking space at its downtown skyscraper would increasingly be a problem for its customers. The solution in 1954 was to open the Northland Center in nearby Southfield, just beyond the city limits. It was the largest suburban shopping center in the world, and quickly became the main shopping destination for northern and western Detroit, and for much of the suburbs. By 1961 the downtown skyscraper accounted for only half of Hudson's sales; it closed in 1986. The Northland Center Hudson's, rebranded Macy's in 2006 following acquisition by Federated Department Stores, was closed along with the remaining stores in the center in March 2015 due to the mall's high storefront vacancy, decaying infrastructure, and financial mismanagement.
What company purchased the Northland Center in 2016?
Answer: unanswerable


Question: Spielberg was scheduled to shoot a $200 million adaptation of Daniel H. Wilson's novel Robopocalypse, adapted for the screen by Drew Goddard. The film would follow a global human war against a robot uprising about 15–20 years in the future. Like Lincoln, it was to be released by Disney in the United States and Fox overseas. It was set for release on April 25, 2014, with Anne Hathaway and Chris Hemsworth set to star, but Spielberg postponed production indefinitely in January 2013, just before it had been set to begin.
Is there an answer to this question: How far in the future was 'Robopocalypse' set?

Answer: 15–20 years


QUES: The tradition holds that Virgil was born in the village of Andes, near Mantua in Cisalpine Gaul. Analysis of his name has led to beliefs that he descended from earlier Roman colonists. Modern speculation ultimately is not supported by narrative evidence either from his own writings or his later biographers. Macrobius says that Virgil's father was of a humble background; however, scholars generally believe that Virgil was from an equestrian landowning family which could afford to give him an education. He attended schools in Cremona, Mediolanum, Rome and Naples. After considering briefly a career in rhetoric and law, the young Virgil turned his talents to poetry.

What career did Virgil's father have?
What is the answer?
ANS:
unanswerable