Problem: New York City:

The city's population in 2010 was 44% white (33.3% non-Hispanic white), 25.5% black (23% non-Hispanic black), 0.7% Native American, and 12.7% Asian. Hispanics of any race represented 28.6% of the population, while Asians constituted the fastest-growing segment of the city's population between 2000 and 2010; the non-Hispanic white population declined 3 percent, the smallest recorded decline in decades; and for the first time since the Civil War, the number of blacks declined over a decade.

By what percentage did the non-Hispanic white population decrease?
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A: 3


Problem: In the early part of the 20th century, San Diego hosted two World's Fairs: the Panama-California Exposition in 1915 and the California Pacific International Exposition in 1935. Both expositions were held in Balboa Park, and many of the Spanish/Baroque-style buildings that were built for those expositions remain to this day as central features of the park. The buildings were intended to be temporary structures, but most remained in continuous use until they progressively fell into disrepair. Most were eventually rebuilt, using castings of the original façades to retain the architectural style. The menagerie of exotic animals featured at the 1915 exposition provided the basis for the San Diego Zoo. During the 1950s there was a citywide festival called Fiesta del Pacifico highlighting the area's Spanish and Mexican past. In the 2010s there was a proposal for a large-scale celebration of the 100th anniversary of Balboa Park, but the plans were abandoned when the organization tasked with putting on the celebration went out of business.
Where did many of the San Francisco Zoo's exotic animals come from?
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Answer: unanswerable


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The term Ashkenazi also refers to the nusach Ashkenaz (Hebrew, "liturgical tradition", or rite) used by Ashkenazi Jews in their Siddur (prayer book). A nusach is defined by a liturgical tradition's choice of prayers, order of prayers, text of prayers and melodies used in the singing of prayers. Two other major forms of nusach among Ashkenazic Jews are Nusach Sefard (not to be confused with the Sephardic ritual), which is the general Polish Hasidic nusach, and Nusach Ari, as used by Lubavitch Hasidim.
The term Ashkenazi also refers to what?
A: the nusach Ashkenaz


Context and question: Spanish was the language spoken by the first permanent European settlers in North America. Spanish arrived in the territory of the modern United States with Ponce de León in 1513. In 1565, the Spaniards, by way of Juan Ponce de León, founded St. Augustine, Florida, and as of the early 1800s, it became the oldest continuously occupied European settlement in the continental United States. The oldest city in all of the U.S. territory, as of 1898, is San Juan, capital of Puerto Rico, where Juan Ponce De León was its first governor
What year did Ponce de Leon settle in the US?
Answer: unanswerable


Question: Spring and autumn have, on average, mild days and fresh nights but are changing and unstable. Surprisingly warm or cool weather occurs frequently in both seasons. In winter, sunshine is scarce; days are cold but generally above freezing with temperatures around 7 °C (45 °F). Light night frosts are however quite common, but the temperature will dip below −5 °C (23 °F) for only a few days a year. Snow falls every year, but rarely stays on the ground. The city sometimes sees light snow or flurries with or without accumulation.
Is there an answer to this question: How often does the temperature drop below -5 C

Answer: a few days a year


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Richmond is home to the rapidly developing Virginia BioTechnology Research Park, which opened in 1995 as an incubator facility for biotechnology and pharmaceutical companies. Located adjacent to the Medical College of Virginia (MCV) Campus of Virginia Commonwealth University, the park currently[when?] has more than 575,000 square feet (53,400 m2) of research, laboratory and office space for a diverse tenant mix of companies, research institutes, government laboratories and non-profit organizations. The United Network for Organ Sharing, which maintains the nation's organ transplant waiting list, occupies one building in the park. Philip Morris USA opened a $350 million research and development facility in the park in 2007. Once fully developed, park officials expect the site to employ roughly 3,000 scientists, technicians and engineers.
When did Philip Morris' R&D facility open?
A:
2007