Question: The city struck fortune in the late 18th century with the inventions and industrial activity of Eli Whitney, a Yale graduate who remained in New Haven to develop the cotton gin and establish a gun-manufacturing factory in the northern part of the city near the Hamden town line. That area is still known as Whitneyville, and the main road through both towns is known as Whitney Avenue. The factory is now the Eli Whitney Museum, which has a particular emphasis on activities for children and exhibits pertaining to the A. C. Gilbert Company. His factory, along with that of Simeon North, and the lively clock-making and brass hardware sectors, contributed to making early Connecticut a powerful manufacturing economy; so many arms manufacturers sprang up that the state became known as "The Arsenal of America". It was in Whitney's gun-manufacturing plant that Samuel Colt invented the automatic revolver in 1836. The Farmington Canal, created in the early 19th century, was a short-lived transporter of goods into the interior regions of Connecticut and Massachusetts, and ran from New Haven to Northampton, Massachusetts.
Is there an answer to this question: In 1836, who invented the automatic revolver in Eli Whitney's gun manufacturing plant?

Answer: Samuel Colt


Question: German cinema dates back to the very early years of the medium with the work of Max Skladanowsky. It was particularly influential during the years of the Weimar Republic with German expressionists such as Robert Wiene and Friedrich Wilhelm Murnau. The Nazi era produced mostly propaganda films although the work of Leni Riefenstahl still introduced new aesthetics in film. From the 1960s, New German Cinema directors such as Volker Schlöndorff, Werner Herzog, Wim Wenders, Rainer Werner Fassbinder placed West-German cinema back onto the international stage with their often provocative films, while the Deutsche Film-Aktiengesellschaft controlled film production in the GDR.
Is there an answer to this question: What did Leni Riefenstahl do in the 1960's?

Answer: unanswerable


Question: A videoconference system is generally higher cost than a videophone and deploys greater capabilities. A videoconference (also known as a videoteleconference) allows two or more locations to communicate via live, simultaneous two-way video and audio transmissions. This is often accomplished by the use of a multipoint control unit (a centralized distribution and call management system) or by a similar non-centralized multipoint capability embedded in each videoconferencing unit. Again, technology improvements have circumvented traditional definitions by allowing multiple party videoconferencing via web-based applications.
Is there an answer to this question: How many locations can one use videoconferencing for?

Answer: two or more


Question: Mexico City offers an immense and varied consumer retail market, ranging from basic foods to ultra high-end luxury goods. Consumers may buy in fixed indoor markets, mobile markets (tianguis), from street vendors, from downtown shops in a street dedicated to a certain type of good, in convenience stores and traditional neighborhood stores, in modern supermarkets, in warehouse and membership stores and the shopping centers that they anchor, in department stores, big-box stores and in modern shopping malls.
Is there an answer to this question: How is the retail market of Mexico City?

Answer:
immense and varied