Problem: Alfred North Whitehead:

At the time structures such as Lie algebras and hyperbolic quaternions drew attention to the need to expand algebraic structures beyond the associatively multiplicative class. In a review Alexander Macfarlane wrote: "The main idea of the work is not unification of the several methods, nor generalization of ordinary algebra so as to include them, but rather the comparative study of their several structures." In a separate review, G. B. Mathews wrote, "It possesses a unity of design which is really remarkable, considering the variety of its themes."

What did Lie algebras and hyperbolic quaternions demonstrate a need for?
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A: the need to expand algebraic structures beyond the associatively multiplicative class

Problem: In November 2014, Sony Pictures Entertainment was targeted by hackers who released details of confidential e-mails between Sony executives regarding several high-profile film projects. Included within these were several memos relating to the production of Spectre, claiming that the film was over budget, detailing early drafts of the script written by John Logan, and expressing Sony's frustration with the project. Eon Productions later issued a statement confirming the leak of what they called "an early version of the screenplay".
What film was under budget?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Roman histories and biographies anticipated the extensive mediaeval literature of lives of saints and miraculous chronicles, but the most characteristic form of the Middle Ages was the romance, an adventurous and sometimes magical narrative with strong popular appeal. Controversial, religious, political and instructional literature proliferated during the Renaissance as a result of the invention of printing, while the mediaeval romance developed into a more character-based and psychological form of narrative, the novel, of which early and important examples are the Chinese Monkey and the German Faust books.
What form of literature enjoyed the most widespread popularity during the Middle Ages?
A: the romance

Context and question: In Europe, rates of tuberculosis began to rise in the early 1600s to a peak level in the 1800s, when it caused nearly 25% of all deaths. By the 1950s, mortality had decreased nearly 90%. Improvements in public health began significantly reducing rates of tuberculosis even before the arrival of streptomycin and other antibiotics, although the disease remained a significant threat to public health such that when the Medical Research Council was formed in Britain in 1913, its initial focus was tuberculosis research.
What reduced rates of mortality in the 1950s?
Answer: unanswerable

Question: The University of Houston System's annual impact on the Houston area's economy equates to that of a major corporation: $1.1 billion in new funds attracted annually to the Houston area, $3.13 billion in total economic benefit and 24,000 local jobs generated. This is in addition to the 12,500 new graduates the U.H. System produces every year who enter the workforce in Houston and throughout the state of Texas. These degree-holders tend to stay in Houston. After five years, 80.5% of graduates are still living and working in the region.
Is there an answer to this question: How many student graduate from the University of Texas per year?

Answer: unanswerable

QUES: Luis Cabral, brother of Amilcar and co-founder of PAIGC, was appointed the first President of Guinea-Bissau. Following independence, the PAIGC killed thousands of local Guinean soldiers who had fought along with the Portuguese Army against guerrillas. Some escaped to settle in Portugal or other African nations. One of the massacres occurred in the town of Bissora. In 1980 the PAIGC acknowledged in its newspaper No Pintcha (dated 29 November 1980) that many Gueinean soldiers had been executed and buried in unmarked collective graves in the woods of Cumera, Portogole, and Mansaba.

How many Guinean soldiers did the PAIGC kill?
What is the answer?
ANS:
thousands