Problem: Daylight saving time:

Since then, the world has seen many enactments, adjustments, and repeals. For specific details, an overview is available at Daylight saving time by country.

Has the world seen many or few changes in the observation of DST?
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A: many


Problem: A new approach to avoiding overhead wires is taken by the "second generation" tram/streetcar system in Bordeaux, France (entry into service of the first line in December 2003; original system discontinued in 1958) with its APS (alimentation par sol – ground current feed). This involves a third rail which is flush with the surface like the tops of the running rails. The circuit is divided into segments with each segment energized in turn by sensors from the car as it passes over it, the remainder of the third rail remaining "dead". Since each energized segment is completely covered by the lengthy articulated cars, and goes dead before being "uncovered" by the passage of the vehicle, there is no danger to pedestrians. This system has also been adopted in some sections of the new tram systems in Reims, France (opened 2011) and Angers, France (also opened 2011). Proposals are in place for a number of other new services including Dubai, UAE; Barcelona, Spain; Florence, Italy; Marseille, France; Gold Coast, Australia; Washington, D.C., U.S.A.; Brasília, Brazil and Tours, France.
When was the original system discontinued?
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Answer: 1958


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The January daily average is 33.0 °F (0.6 °C), though, in a normal winter, the temperature frequently rises to 50 °F (10 °C) during thaws and dips to 10 °F (−12 °C) for 2 or 3 nights. July averages 78.1 °F (25.6 °C), although heat waves accompanied by high humidity and heat indices are frequent; highs reach or exceed 90 °F (32 °C) on 27 days of the year. The average window for freezing temperatures is November 6 thru April 2, allowing a growing season of 217 days. Early fall and late winter are generally dry; February's average of 2.64 inches (67 mm) makes it the area's driest month. The dewpoint in the summer averages between 59.1 °F (15 °C) to 64.5 °F (18 °C).
Which month is the driest?
A: February


Context and question: The storage in sensory memory and short-term memory generally has a strictly limited capacity and duration, which means that information is not retained indefinitely. By contrast, long-term memory can store much larger quantities of information for potentially unlimited duration (sometimes a whole life span). Its capacity is immeasurable. For example, given a random seven-digit number we may remember it for only a few seconds before forgetting, suggesting it was stored in our short-term memory. On the other hand, we can remember telephone numbers for many years through repetition; this information is said to be stored in long-term memory.
What is the capacity of long term memory?
Answer: capacity is immeasurable


Question: Santa Monica is a beachfront city in western Los Angeles County, California, United States. The city is named after the Christian saint, Monica. Situated on Santa Monica Bay, it is bordered on three sides by the city of Los Angeles – Pacific Palisades to the north, Brentwood on the northeast, Sawtelle on the east, Mar Vista on the southeast, and Venice on the south. Santa Monica is well known for its affluent single-family neighborhoods but also has many neighborhoods consisting primarily of condominiums and apartments. Over two-thirds of Santa Monica's residents are renters. The Census Bureau population for Santa Monica in 2010 was 89,736.
Is there an answer to this question: What is Santa Monica named after?

Answer: Christian saint, Monica


Problem: Antarctica:

As a result of continued warming, the polar ice caps melted and much of Gondwana became a desert. In Eastern Antarctica, seed ferns or pteridosperms became abundant and large amounts of sandstone and shale were laid down at this time. Synapsids, commonly known as "mammal-like reptiles", were common in Antarctica during the Early Triassic and included forms such as Lystrosaurus. The Antarctic Peninsula began to form during the Jurassic period (206–146 Ma), and islands gradually rose out of the ocean. Ginkgo trees, conifers, bennettites, horsetails, ferns and cycads were plentiful during this period. In West Antarctica, coniferous forests dominated through the entire Cretaceous period (146–66 Ma), though southern beech became more prominent towards the end of this period. Ammonites were common in the seas around Antarctica, and dinosaurs were also present, though only three Antarctic dinosaur genera (Cryolophosaurus and Glacialisaurus, from the Hanson Formation, and Antarctopelta) have been described to date. It was during this era that Gondwana began to break up.

What plants were abundant during this time?
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A:
pteridosperms