Problem: Insect:

Late Carboniferous and Early Permian insect orders include both extant groups, their stem groups, and a number of Paleozoic groups, now extinct. During this era, some giant dragonfly-like forms reached wingspans of 55 to 70 cm (22 to 28 in), making them far larger than any living insect. This gigantism may have been due to higher atmospheric oxygen levels that allowed increased respiratory efficiency relative to today. The lack of flying vertebrates could have been another factor. Most extinct orders of insects developed during the Permian period that began around 270 million years ago. Many of the early groups became extinct during the Permian-Triassic extinction event, the largest mass extinction in the history of the Earth, around 252 million years ago.

The most significant mass extinction of insect groups is commonly ascribed to what period?
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A: Permian-Triassic


Problem: Bannerman Park is a Victorian-style park located near the downtown. The park was officially opened in 1891 by Sir Alexander Bannerman, Governor of the Colony of Newfoundland who donated the land to create the park. Today the park contains a public swimming pool, playground, a baseball diamond and many large open grassy areas. Bannerman Park plays host to many festivals and sporting events, most notably the Newfoundland and Labrador Folk Festival and St. John's Peace-a-chord. The park is also the finishing location for the annual Tely 10 Mile Road Race.
What park was opened in the 18th century?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Various disco songs incorporated sounds produced with synthesizers and drum machines, and some compositions were entirely electronic; examples include Giorgio Moroder's late 1970s productions such as Donna Summer's hit single "I Feel Love" from 1977, Cerrone's "Supernature" (1977), Yellow Magic Orchestra's synth-disco-pop productions from Yellow Magic Orchestra (1978), Solid State Survivor (1979), and several early 1980s disco-pop productions by the Hi-NRG group Lime.
What year was solid state survivor released?
A: 1979


Context and question: Three-phase AC railway electrification was used in Italy, Switzerland and the United States in the early twentieth century. Italy was the major user, for lines in the mountainous regions of northern Italy from 1901 until 1976. The first lines were the Burgdorf-Thun line in Switzerland (1899), and the lines of the Ferrovia Alta Valtellina from Colico to Chiavenna and Tirano in Italy, which were electrified in 1901 and 1902. Other lines where the three-phase system were used were the Simplon Tunnel in Switzerland from 1906 to 1930, and the Cascade Tunnel of the Great Northern Railway in the United States from 1909 to 1927.
Who was the major user of railway electrification in the nineteenth century?
Answer: unanswerable


Question: Most web browsers can display a list of web pages that the user has bookmarked so that the user can quickly return to them. Bookmarks are also called "Favorites" in Internet Explorer. In addition, all major web browsers have some form of built-in web feed aggregator. In Firefox, web feeds are formatted as "live bookmarks" and behave like a folder of bookmarks corresponding to recent entries in the feed. In Opera, a more traditional feed reader is included which stores and displays the contents of the feed.
Is there an answer to this question: The top browsers have a built-in what?

Answer: feed aggregator


Question: Between 301 and 219 BCE the Ptolemies ruled Judea in relative peace, and Jews often found themselves working in the Ptolemaic administration and army, which led to the rise of a Hellenized Jewish elite class (e.g. the Tobiads). The wars of Antiochus III brought the region into the Seleucid empire; Jerusalem fell to his control in 198 and the Temple was repaired and provided with money and tribute. Antiochus IV Epiphanes sacked Jerusalem and looted the Temple in 169 BCE after disturbances in Judea during his abortive invasion of Egypt. Antiochus then banned key Jewish religious rites and traditions in Judea. He may have been attempting to Hellenize the region and unify his empire and the Jewish resistance to this eventually led to an escalation of violence. Whatever the case, tensions between pro and anti-Seleucid Jewish factions led to the 174–135 BCE Maccabean Revolt of Judas Maccabeus (whose victory is celebrated in the Jewish festival of Hanukkah).
Is there an answer to this question: What years were the Maccabean Revolt of Judas Maccabeus?

Answer:
174–135 BCE