Context and question: The first Armenian churches were built between the 4th and 7th century, beginning when Armenia converted to Christianity, and ending with the Arab invasion of Armenia. The early churches were mostly simple basilicas, but some with side apses. By the fifth century the typical cupola cone in the center had become widely used. By the seventh century, centrally planned churches had been built and a more complicated niched buttress and radiating Hrip'sime style had formed. By the time of the Arab invasion, most of what we now know as classical Armenian architecture had formed.
When were the first Arab structures built?
Answer: unanswerable
Context and question: Winters are cold and damp, and prevailing wind patterns that blow offshore minimize the moderating effects of the Atlantic Ocean; yet the Atlantic and the partial shielding from colder air by the Appalachians keep the city warmer in the winter than inland North American cities at similar or lesser latitudes such as Pittsburgh, Cincinnati, and Indianapolis. The daily mean temperature in January, the area's coldest month, is 32.6 F (0.3 C); however, temperatures usually drop to 10 F (12 C) several times per winter, and reach 50 F (10 C) several days each winter month. Spring and autumn are unpredictable and can range from chilly to warm, although they are usually mild with low humidity. Summers are typically warm to hot and humid, with a daily mean temperature of 76.5 F (24.7 C) in July and an average humidity level of 72%. Nighttime conditions are often exacerbated by the urban heat island phenomenon, while daytime temperatures exceed 90 F (32 C) on average of 17 days each summer and in some years exceed 100 F (38 C). In the warmer months, the dew point, a measure of atmospheric moisture, ranges from 57.3 F (14.1 C) in June to 62.0 F (16.7 C) in August. Extreme temperatures have ranged from 15 F (26 C), recorded on February 9, 1934, up to 106 F (41 C) on July 9, 1936.
What is the average humidity in July as a percentage?
Answer: 72%
Context and question: There is a direct relationship between declines in wealth and declines in consumption and business investment, which along with government spending, represent the economic engine. Between June 2007 and November 2008, Americans lost an estimated average of more than a quarter of their collective net worth.[citation needed] By early November 2008, a broad U.S. stock index the S&P 500, was down 45% from its 2007 high. Housing prices had dropped 20% from their 2006 peak, with futures markets signaling a 3035% potential drop. Total home equity in the United States, which was valued at $13 trillion at its peak in 2006, had dropped to $8.8 trillion by mid-2008 and was still falling in late 2008. Total retirement assets, Americans' second-largest household asset, dropped by 22%, from $10.3 trillion in 2006 to $8 trillion in mid-2008. During the same period, savings and investment assets (apart from retirement savings) lost $1.2 trillion and pension assets lost $1.3 trillion. Taken together, these losses total a staggering $8.3 trillion. Since peaking in the second quarter of 2007, household wealth is down $14 trillion.
In November 2008, how much was the U.S. stock index down from its 2007 high?
Answer:
45%