Problem: Predation:

It is fairly clear that predators tend to lower the survival and fecundity of their prey, but on a higher level of organization, populations of predator and prey species also interact. It is obvious that predators depend on prey for survival, and this is reflected in predator populations being affected by changes in prey populations. It is not so obvious, however, that predators affect prey populations. Eating a prey organism may simply make room for another if the prey population is approaching its carrying capacity.

Predators lower what aspects of their prey?
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A: survival and fecundity

Problem: A self-described "modern-day feminist", Beyonce creates songs that are often characterized by themes of love, relationships, and monogamy, as well as female sexuality and empowerment. On stage, her dynamic, highly choreographed performances have led to critics hailing her as one of the best entertainers in contemporary popular music. Throughout a career spanning 19 years, she has sold over 118 million records as a solo artist, and a further 60 million with Destiny's Child, making her one of the best-selling music artists of all time. She has won 20 Grammy Awards and is the most nominated woman in the award's history. The Recording Industry Association of America recognized her as the Top Certified Artist in America during the 2000s decade. In 2009, Billboard named her the Top Radio Songs Artist of the Decade, the Top Female Artist of the 2000s and their Artist of the Millennium in 2011. Time listed her among the 100 most influential people in the world in 2013 and 2014. Forbes magazine also listed her as the most powerful female musician of 2015.
In which years did Time rate Beyonce in the 100 most influential people in the world?
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Answer: 2013 and 2014

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Rejecting offers to direct Jaws 2, King Kong and Superman, Spielberg and actor Richard Dreyfuss re-convened to work on a film about UFOs, which became Close Encounters of the Third Kind (1977). One of the rare films both written and directed by Spielberg, Close Encounters was a critical and box office hit, giving Spielberg his first Best Director nomination from the Academy as well as earning six other Academy Awards nominations. It won Oscars in two categories (Cinematography, Vilmos Zsigmond, and a Special Achievement Award for Sound Effects Editing, Frank E. Warner). This second blockbuster helped to secure Spielberg's rise. His next film, 1941, a big-budgeted World War II farce, was not nearly as successful and though it grossed over $92.4 million worldwide (and did make a small profit for co-producing studios Columbia and Universal) it was seen as a disappointment, mainly with the critics.
How much did Close Encounters earn overseas?
A: unanswerable

Context and question: The Slavic autonym *Slovenin is usually considered (e.g. by Roman Jakobson) a derivation from slovo "word", originally denoting "people who speak (the same language)," i.e. people who understand each other, in contrast to the Slavic word denoting "foreign people" nemci, meaning "mumbling, murmuring people" (from Slavic *nem "mumbling, mute").
What word did Roman Jakobson use to call Slavics foreign people?
Answer: unanswerable

Question: Safety testing of mine shaft elevator rails is routinely undertaken. The method involves destructive testing of a segment of the cable. The ends of the segment are frayed, then set in conical zinc molds. Each end of the segment is then secured in a large, hydraulic stretching machine. The segment is then placed under increasing load to the point of failure. Data about elasticity, load, and other factors is compiled and a report is produced. The report is then analyzed to determine whether or not the entire rail is safe to use.
Is there an answer to this question: Afterwards, what type of machine is the segment secured in?

Answer: hydraulic stretching machine

Question: The budget of the city for 2013 was 7.6 billion, of which 5.4 billion went for city administration, while 2.2 billion went for investment. The largest part of the budget (38 percent) went for public housing and urbanism projects; 15 percent for roads and transport; 8 percent for schools (which are mostly financed by the state budget); 5 percent for parks and gardens; and 4 percent for culture. The main source of income for the city is direct taxes (35 percent), supplemented by a 13-percent real estate tax; 19 percent of the budget comes in a transfer from the national government.
Is there an answer to this question: What percentage of the budget is allocated for schools?

Answer:
8