Problem: Cubism:

It was against this background of public anger that Jean Metzinger and Albert Gleizes wrote Du "Cubisme" (published by Eugène Figuière in 1912, translated to English and Russian in 1913). Among the works exhibited were Le Fauconnier's vast composition Les Montagnards attaqués par des ours (Mountaineers Attacked by Bears) now at Rhode Island School of Design Museum, Joseph Csaky's Deux Femme, Two Women (a sculpture now lost), in addition to the highly abstract paintings by Kupka, Amorpha (The National Gallery, Prague), and Picabia, La Source, The Spring (Museum of Modern Art, New York).

What against did Metzinger and Gleizes write Du "Cubsime"? 
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A: public anger


Problem: Apple spent $2.5 million purchasing all 39 advertising pages in a special, post-election issue of Newsweek, and ran a "Test Drive a Macintosh" promotion, in which potential buyers with a credit card could take home a Macintosh for 24 hours and return it to a dealer afterwards. While 200,000 people participated, dealers disliked the promotion, the supply of computers was insufficient for demand, and many were returned in such a bad condition that they could no longer be sold. This marketing campaign caused CEO John Sculley to raise the price from US$1,995 to US$2,495 (about $5,200 when adjusted for inflation in 2010). The computer sold well, nonetheless, reportedly outselling the IBM PCjr which also began shipping early that year. By April 1984 the company sold 50,000 Macintoshes, and hoped for 70,000 by early May and almost 250,000 by the end of the year.
How were many computers returned during the Test Drive a Macintosh promotion that made them unsellable?
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Answer: a bad condition


Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
The Three Gorges Dam, the largest dam ever constructed, is being built on the Yangtze River in nearby Hubei province to control flooding in the Sichuan Basin, neighboring Yunnan province, and downstream. The plan is hailed by some as China's efforts to shift towards alternative energy sources and to further develop its industrial and commercial bases, but others have criticised it for its potentially harmful effects, such as massive resettlement of residents in the reservoir areas, loss of archeological sites, and ecological damages.
What is the largest ever built in commercial bases?
A: unanswerable


Context and question: Daphne was a nymph, daughter of the river god Peneus, who had scorned Apollo. The myth explains the connection of Apollo with δάφνη (daphnē), the laurel whose leaves his priestess employed at Delphi. In Ovid's Metamorphoses, Phoebus Apollo chaffs Cupid for toying with a weapon more suited to a man, whereupon Cupid wounds him with a golden dart; simultaneously, however, Cupid shoots a leaden arrow into Daphne, causing her to be repulsed by Apollo. Following a spirited chase by Apollo, Daphne prays to her father, Peneus, for help, and he changes her into the laurel tree, sacred to Apollo.
Who was the daughter of Peneus?
Answer: Daphne


Question: Built around 1915, the Alaska Railroad (ARR) played a key role in the development of Alaska through the 20th century. It links north Pacific shipping through providing critical infrastructure with tracks that run from Seward to Interior Alaska by way of South Central Alaska, passing through Anchorage, Eklutna, Wasilla, Talkeetna, Denali, and Fairbanks, with spurs to Whittier, Palmer and North Pole. The cities, towns, villages, and region served by ARR tracks are known statewide as "The Railbelt". In recent years, the ever-improving paved highway system began to eclipse the railroad's importance in Alaska's economy.
Is there an answer to this question: What year wasn't the Alaska Railroad built?

Answer: unanswerable


Problem: Communication:

Family communication study looks at topics such as family rules, family roles or family dialectics and how those factors could affect the communication between family members. Researchers develop theories to understand communication behaviors. Family communication study also digs deep into certain time periods of family life such as marriage, parenthood or divorce and how communication stands in those situations. It is important for family members to understand communication as a trusted way which leads to a well constructed family.

What does trusted communication in a family lead to?
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A:
a well constructed family