Here is a question about this article: Summers are generally warm and sometimes hot. London's average July high is 24 C (75.2 F). On average London will see 31 days above 25 C (77.0 F) each year, and 4.2 days above 30.0 C (86.0 F) every year. During the 2003 European heat wave there were 14 consecutive days above 30 C (86.0 F) and 2 consecutive days where temperatures reached 38 C (100.4 F), leading to hundreds of heat related deaths. Winters are generally cool and damp with little temperature variation. Snowfall does occur from time to time, and can cause travel disruption when this happens. Spring and autumn are mixed seasons and can be pleasant. As a large city, London has a considerable urban heat island effect, making the centre of London at times 5 C (9 F) warmer than the suburbs and outskirts. The effect of this can be seen below when comparing London Heathrow, 15 miles west of London, with the London Weather Centre, in the city centre.
What is the answer to this question: What occasional weather event causes problems for drivers in London?
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So... Snowfall

Here is a question about this article: Typical fast food dishes include the Francesinha (Frenchie) from Porto, and bifanas (grilled pork) or prego (grilled beef) sandwiches, which are well known around the country. The Portuguese art of pastry has its origins in the many medieval Catholic monasteries spread widely across the country. These monasteries, using very few ingredients (mostly almonds, flour, eggs and some liquor), managed to create a spectacular wide range of different pastries, of which pasteis de Belem (or pasteis de nata) originally from Lisbon, and ovos moles from Aveiro are examples. Portuguese cuisine is very diverse, with different regions having their own traditional dishes. The Portuguese have a culture of good food, and throughout the country there are myriads of good restaurants and typical small tasquinhas.
What is the answer to this question: What are two examples of Portuguese pastries?
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So... pasteis de Belem (or pasteis de nata) originally from Lisbon, and ovos moles from Aveiro

Here is a question about this article: The scientific revolution is a convenient boundary between ancient thought and classical physics. Nicolaus Copernicus revived the heliocentric model of the solar system described by Aristarchus of Samos. This was followed by the first known model of planetary motion given by Johannes Kepler in the early 17th century, which proposed that the planets follow elliptical orbits, with the Sun at one focus of the ellipse. Galileo ("Father of Modern Physics") also made use of experiments to validate physical theories, a key element of the scientific method.
What is the answer to this question: Johannes Kepler created a model of what?
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So...
planetary motion