Question: There is an environmental program, called Hoy No Circula ("Today Does Not Run", or "One Day without a Car"), whereby vehicles that have not passed emissions testing are restricted from circulating on certain days according to the ending digit of their license plates; this in an attempt to cut down on pollution and traffic congestion. While in 2003, the program still restricted 40% of vehicles in the metropolitan area, with the adoption of stricter emissions standards in 2001 and 2006, in practice, these days most vehicles are exempt from the circulation restrictions as long as they pass regular emissions tests.
Is there an answer to this question: How do people know which days to not drive their car?

Answer: ending digit of their license plates


Question: A nonstandard dialect, like a standard dialect, has a complete vocabulary, grammar, and syntax, but is usually not the beneficiary of institutional support. Examples of a nonstandard English dialect are Southern American English, Western Australian English, Scouse and Tyke. The Dialect Test was designed by Joseph Wright to compare different English dialects with each other.
Is there an answer to this question: A nonstandard dialect usually receives what type of support?

Answer: unanswerable


Question: Arnold, Constable was the first American department store. It was founded in 1825 by Aaron Arnold (1794?-1876), an emigrant from Great Britain, as a small dry goods store on Pine Street in New York City. In 1857 the store moved into a five-story white marble dry goods palace known as the Marble House. During the Civil War Arnold, Constable was one of the first stores to issue charge bills of credit to its customers each month instead of on a bi-annual basis. Recognized as an emporium for high-quality fashions, the store soon outgrew the Marble House and erected a cast-iron building on Broadway and Nineteenth Street in 1869; this “Palace of Trade” expanded over the years until it was necessary to move into a larger space in 1914. In 1925, Arnold, Constable merged with Stewart & Company and expanded into the suburbs, first with a 1937 store in New Rochelle, New York and later in Hempstead and Manhasset on Long Island, and in New Jersey. Financial problems led to bankruptcy in 1975.
Is there an answer to this question: Who founded Arnold, Constable? 

Answer: Aaron Arnold


Question: In 1814, a secret organization called the Filiki Eteria (Society of Friends) was founded with the aim of liberating Greece. The Filiki Eteria planned to launch revolution in the Peloponnese, the Danubian Principalities and Constantinople. The first of these revolts began on 6 March 1821 in the Danubian Principalities under the leadership of Alexandros Ypsilantis, but it was soon put down by the Ottomans. The events in the north spurred the Greeks of the Peloponnese into action and on 17 March 1821 the Maniots declared war on the Ottomans.
Is there an answer to this question: War was started with the Ottomans when?

Answer:
17 March 1821