Input: Read this: Electric railways use electric locomotives to haul passengers or freight in separate cars or electric multiple units, passenger cars with their own motors. Electricity is typically generated in large and relatively efficient generating stations, transmitted to the railway network and distributed to the trains. Some electric railways have their own dedicated generating stations and transmission lines but most purchase power from an electric utility. The railway usually provides its own distribution lines, switches and transformers.
Question: All electric railways have their own dedicated what?

Output: unanswerable

QUES: The capital, Brazzaville, is located on the Congo River, in the south of the country, immediately across from Kinshasa, the capital of the Democratic Republic of the Congo.

What is located in the south of the Republic of the Congo?
What is the answer?
ANS: unanswerable

QUES: In 2001, Fuller, Cowell, and TV producer Simon Jones attempted to sell the Pop Idol format to the United States, but the idea was met with poor response from United States television networks. However, Rupert Murdoch, head of Fox's parent company, was persuaded to buy the show by his daughter Elisabeth, who was a fan of the British show. The show was renamed American Idol: The Search for a Superstar and debuted in the summer of 2002. Cowell was initially offered the job as showrunner but refused; Lythgoe then took over that position. Much to Cowell's surprise, it became one of the hit shows for the summer that year. The show, with the personal engagement of the viewers with the contestants through voting, and the presence of the acid-tongued Cowell as a judge, grew into a phenomenon. By 2004, it had become the most-watched show in the U.S., a position it then held on for seven consecutive seasons.
Who talked Rupert Murdoch into buying American Idol for FOX?

ANS: his daughter Elisabeth

During the First Opium War, the British navy defeated Eight Banners forces at Ningbo and Dinghai. Under the terms of the Treaty of Nanking, signed in 1843, Ningbo became one of the five Chinese treaty ports opened to virtually unrestricted foreign trade. Much of Zhejiang came under the control of the Taiping Heavenly Kingdom during the Taiping Rebellion, which resulted in a considerable loss of life in the province. In 1876, Wenzhou became Zhejiang's second treaty port.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): When was the Treaty of Nanking signed?
Ah, so.. 1843

Question: On October 9, 2006 at 6:00 a.m., the network switched to a 24-hour schedule, becoming one of the last major English-language broadcasters to transition to such a schedule. Most CBC-owned stations previously signed off the air during the early morning hours (typically from 1:00 a.m. to 6:00 a.m.). Instead of the infomercials aired by most private stations, or a simulcast of CBC News Network in the style of BBC One's nightly simulcast of BBC News Channel, the CBC uses the time to air repeats, including local news, primetime series, movies and other programming from the CBC library. Its French counterpart, Ici Radio-Canada Tele, still signs off every night.
Try to answer this question if possible: When did stations previously sign off the air?
Answer: early morning hours (typically from 1:00 a.m. to 6:00 a.m.)

QUES: It would appear that living organisms are remarkably inefficient (in the physical sense) in their use of the energy they receive (chemical energy or radiation), and it is true that most real machines manage higher efficiencies. In growing organisms the energy that is converted to heat serves a vital purpose, as it allows the organism tissue to be highly ordered with regard to the molecules it is built from. The second law of thermodynamics states that energy (and matter) tends to become more evenly spread out across the universe: to concentrate energy (or matter) in one specific place, it is necessary to spread out a greater amount of energy (as heat) across the remainder of the universe ("the surroundings").[note 3] Simpler organisms can achieve higher energy efficiencies than more complex ones, but the complex organisms can occupy ecological niches that are not available to their simpler brethren. The conversion of a portion of the chemical energy to heat at each step in a metabolic pathway is the physical reason behind the pyramid of biomass observed in ecology: to take just the first step in the food chain, of the estimated 124.7 Pg/a of carbon that is fixed by photosynthesis, 64.3 Pg/a (52%) are used for the metabolism of green plants, i.e. reconverted into carbon dioxide and heat.
What are remarkably efficient in their use of the energy they receive?

ANS:
unanswerable