Problem: Karl Popper:

According to John N. Gray, Popper held that "a theory is scientific only in so far as it is falsifiable, and should be given up as soon as it is falsified." By applying Popper's account of scientific method, Gray's Straw Dogs states that this would have "killed the theories of Darwin and Einstein at birth." When they were first advanced, Gray claims, each of them was "at odds with some available evidence; only later did evidence become available that gave them crucial support." Against this, Gray seeks to establish the irrationalist thesis that "the progress of science comes from acting against reason."

Which work by John Gray challenges Popper's falsificationism?
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A: Straw Dogs

Problem: Some street trams (streetcars) used conduit third-rail current collection. The third rail was below street level. The tram picked up the current through a plough (U.S. "plow") accessed through a narrow slot in the road. In the United States, much (though not all) of the former streetcar system in Washington, D.C. (discontinued in 1962) was operated in this manner to avoid the unsightly wires and poles associated with electric traction. The same was true with Manhattan's former streetcar system. The evidence of this mode of running can still be seen on the track down the slope on the northern access to the abandoned Kingsway Tramway Subway in central London, United Kingdom, where the slot between the running rails is clearly visible, and on P and Q Streets west of Wisconsin Avenue in the Georgetown neighborhood of Washington DC, where the abandoned tracks have not been paved over. The slot can easily be confused with the similar looking slot for cable trams/cars (in some cases, the conduit slot was originally a cable slot). The disadvantage of conduit collection included much higher initial installation costs, higher maintenance costs, and problems with leaves and snow getting in the slot. For this reason, in Washington, D.C. cars on some lines converted to overhead wire on leaving the city center, a worker in a "plough pit" disconnecting the plough while another raised the trolley pole (hitherto hooked down to the roof) to the overhead wire. In New York City for the same reasons of cost and operating efficiency outside of Manhattan overhead wire was used. A similar system of changeover from conduit to overhead wire was also used on the London tramways, notably on the southern side; a typical changeover point was at Norwood, where the conduit snaked sideways from between the running rails, to provide a park for detached shoes or ploughs.
An advantage of conduit collection is much high what?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In 1930, Paul Dirac proposed a model of the vacuum as an infinite sea of particles possessing negative energy, called the Dirac sea. This theory helped refine the predictions of his earlier formulated Dirac equation, and successfully predicted the existence of the positron, confirmed two years later. Werner Heisenberg's uncertainty principle formulated in 1927, predict a fundamental limit within which instantaneous position and momentum, or energy and time can be measured. This has far reaching consequences on the "emptiness" of space between particles. In the late 20th century, so-called virtual particles that arise spontaneously from empty space were confirmed.
What did Heisenberg predict the existence of in 1930?
A: unanswerable

Context and question: Football is the most popular sport amongst Somalis. Important competitions are the Somalia League and Somalia Cup. The multi-ethnic Ocean Stars, Somalia's national team, first participated at the Olympic Games in 1972 and has sent athletes to compete in most Summer Olympic Games since then. The equally diverse Somali beach soccer team also represents the country in international beach soccer competitions. In addition, several international footballers such as Mohammed Ahamed Jama, Liban Abdi, Ayub Daud and Abdisalam Ibrahim have played in European top divisions.
In what year did the Ocean Stars first compete in the Olympics?
Answer: 1972

Question: Rejecting offers to direct Jaws 2, King Kong and Superman, Spielberg and actor Richard Dreyfuss re-convened to work on a film about UFOs, which became Close Encounters of the Third Kind (1977). One of the rare films both written and directed by Spielberg, Close Encounters was a critical and box office hit, giving Spielberg his first Best Director nomination from the Academy as well as earning six other Academy Awards nominations. It won Oscars in two categories (Cinematography, Vilmos Zsigmond, and a Special Achievement Award for Sound Effects Editing, Frank E. Warner). This second blockbuster helped to secure Spielberg's rise. His next film, 1941, a big-budgeted World War II farce, was not nearly as successful and though it grossed over $92.4 million worldwide (and did make a small profit for co-producing studios Columbia and Universal) it was seen as a disappointment, mainly with the critics.
Is there an answer to this question: How many Oscars did Close Encounters get nominated for, besides Best Director?

Answer: six

Question: On 5 July 2004, the BBC celebrated the fiftieth anniversary of its television news bulletins (although it had produced the Television Newsreel for several years before 1954). This event was marked by the release of a DVD, which showed highlights of the BBC's television coverage of significant events over the half-century, as well as changes in the format of the BBC television news; from the newsreel format of the first BBC Television News bulletins, to the 24-hour, worldwide news coverage available in 2004. A special edition of Radio Times was also produced, as well as a special section of the BBC News Online website. In 2005 the pioneering BBC television series Little Angels won a BAFTA award. Little Angels was the first reality parenting show and its most famous episode saw Welsh actress Jynine James try to cope with the tantrums of her six-year-old son.
Is there an answer to this question: When was the 50th anniversary of BBC news broadcasts?

Answer:
5 July 2004