Problem: Film speed:

Film speed is found from a plot of optical density vs. log of exposure for the film, known as the Dlog H curve or HurterDriffield curve. There typically are five regions in the curve: the base + fog, the toe, the linear region, the shoulder, and the overexposed region. For black-and-white negative film, the "speed point" m is the point on the curve where density exceeds the base + fog density by 0.1 when the negative is developed so that a point n where the log of exposure is 1.3 units greater than the exposure at point m has a density 0.8 greater than the density at point m. The exposure Hm, in lux-s, is that for point m when the specified contrast condition is satisfied. The ISO arithmetic speed is determined from:

What is a plot of film speed vs. log of exposure called?
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A: unanswerable

Problem: New York City:

Each year HHC's facilities provide about 225,000 admissions, one million emergency room visits and five million clinic visits to New Yorkers. HHC facilities treat nearly one-fifth of all general hospital discharges and more than one third of emergency room and hospital-based clinic visits in New York City.

How many people visit HHC emergency rooms every year?
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A: one million

Problem: Frederic Chopin:

Although this period had been productive, the bad weather had such a detrimental effect on Chopin's health that Sand determined to leave the island. To avoid further customs duties, Sand sold the piano to a local French couple, the Canuts.[n 8] The group traveled first to Barcelona, then to Marseilles, where they stayed for a few months while Chopin convalesced. In May 1839 they headed for the summer to Sand's estate at Nohant, where they spent most summers until 1846. In autumn they returned to Paris, where Chopin's apartment at 5 rue Tronchet was close to Sand's rented accommodation at the rue Pigalle. He frequently visited Sand in the evenings, but both retained some independence. In 1842 he and Sand moved to the Square d'Orleans, living in adjacent buildings.

Who did Sand sell the piano to?
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A: the Canuts.

Problem: Spectre (2015 film):

With filming completed in Rome, production moved to Mexico City in late March to shoot the film's opening sequence, with scenes to include the Day of the Dead festival filmed in and around the Zocalo and the Centro Historico district. The planned scenes required the city square to be closed for filming a sequence involving a fight aboard a Messerschmitt-Bolkow-Blohm Bo 105 helicopter flown by stunt pilot Chuck Aaron, which called for modifications to be made to several buildings to prevent damage. This particular scene in Mexico required 1,500 extras, 10 giant skeletons and 250,000 paper flowers. Reports in the Mexican media added that the film's second unit would move to Palenque in the state of Chiapas, to film aerial manoeuvres considered too dangerous to shoot in an urban area.

Which areas were shown in the Day of the Dead scene in Spectre?
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A:
the Zocalo and the Centro Historico district