Input: Read this: An additional extension to MPEG-2 is named MPEG-2.5 audio, as MPEG-3 already had a different meaning. This extension was developed at Fraunhofer IIS, the registered MP3 patent holders. Like MPEG-2, MPEG-2.5 adds new sampling rates exactly half of that previously possible with MPEG-2. It thus widens the scope of MP3 to include human speech and other applications requiring only 25% of the frequency reproduction possible with MPEG-1. While not an ISO recognized standard, MPEG-2.5 is widely supported by both inexpensive and brand name digital audio players as well as computer software based MP3 encoders and decoders. A sample rate comparison between MPEG-1, 2 and 2.5 is given further down. MPEG-2.5 was not developed by MPEG and was never approved as an international standard. MPEG-2.5 is thus an unofficial or proprietary extension to the MP3 format.
Question: As MPEG-2.5 is unofficial, it is considered what kind of extension to the MP3 format?

Output: proprietary


QUES: Social conflict and the development of technologies can produce changes within a society by altering social dynamics and promoting new cultural models, and spurring or enabling generative action. These social shifts may accompany ideological shifts and other types of cultural change. For example, the U.S. feminist movement involved new practices that produced a shift in gender relations, altering both gender and economic structures. Environmental conditions may also enter as factors. For example, after tropical forests returned at the end of the last ice age, plants suitable for domestication were available, leading to the invention of agriculture, which in turn brought about many cultural innovations and shifts in social dynamics.

What changes do Social conflicts along with developing of technologies have on culture? 
What is the answer?
ANS: social dynamics and promoting new cultural models


QUES: As with other public schools, a scheme was devised towards the end of the 19th century to familiarize privileged schoolboys with social conditions in deprived areas. The project of establishing an 'Eton Mission' in the crowded district of Hackney Wick in east London was started at the beginning of 1880, and lasted until 1971 when it was decided that a more local project (at Dorney) would be more realistic. However over the years much money was raised for the Eton Mission, a fine church by G. F. Bodley was erected, many Etonians visited, and stimulated among other things the Eton Manor Boys' Club, a notable rowing club which has survived the Mission itself, and the 59 Club for motorcyclists.
In what year was G.F. Bodley's church built?

ANS: unanswerable


Britain had been surprised by the sudden Prussian offensive but now began shipping supplies and ₤670,000 (equivalent to ₤89.9 million in 2015) to its new ally. A combined force of allied German states was organised by the British to protect Hanover from French invasion, under the command of the Duke of Cumberland. The British attempted to persuade the Dutch Republic to join the alliance, but the request was rejected, as the Dutch wished to remain fully neutral. Despite the huge disparity in numbers, the year had been successful for the Prussian-led forces on the continent, in contrast to disappointing British campaigns in North America.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How did Britain Protect Hanover?
Ah, so.. combined force of allied German states was organised by the British to protect Hanover


Question: In 2010, a genetic study was conducted on the mummified remains of baboons that were brought back as gifts from Punt by the ancient Egyptians. Led by a research team from the Egyptian Museum and the University of California, the scientists used oxygen isotope analysis to examine hairs from two baboon mummies that had been preserved in the British Museum. One of the baboons had distorted isotopic data, so the other's oxygen isotope values were compared to those of present-day baboon specimens from regions of interest. The researchers found that the mummies most closely matched modern baboon specimens in Eritrea and Ethiopia, which they suggested implied that Punt was likely a narrow region that included eastern Ethiopia and all of Eritrea.
Try to answer this question if possible: How many hairs on each baboon mummy did scientists study?
Answer: unanswerable


Context and question: Samoans' religious adherence includes the following: Christian Congregational Church of Samoa 31.8%, Roman Catholic 19.4%, Methodist 15.2%, Assembly of God 13.7%, Mormon 7.6%, Seventh-day Adventist 3.9%, Worship Centre 1.7%, other Christian 5.5%, other 0.7%, none 0.1%, unspecified 0.1% (2011 estimate). The Head of State until 2007, His Highness Malietoa Tanumafili II, was a Bahá'í convert. Samoa hosts one of seven Bahá'í Houses of Worship in the world; completed in 1984 and dedicated by the Head of State, it is located in Tiapapata, 8 km (5 mi) from Apia.
When was the Roman Catholic church built in Samoa?
Answer:
unanswerable