Question: Plans for arena football were put on hold in 1982 as the United States Football League was launched. Foster left the NFL to accept a position in the USFL. He eventually became executive vice-president with the Chicago Blitz, where he returned to his concept of arena football. In 1983, he began organizing the test game in his spare time from his job with the Blitz. By 1985, the USFL had ceased football operations and he began devoting all his time to arena football, and on April 27, 1986, his concept was realized when the test game was played.
Is there an answer to this question: When did the USFL shut down?

Answer: 1985

Question: At the age of 19, he wrote a report on his work and sent it to philologist Alexander Ellis, a colleague of his father (who would later be portrayed as Professor Henry Higgins in Pygmalion). Ellis immediately wrote back indicating that the experiments were similar to existing work in Germany, and also lent Bell a copy of Hermann von Helmholtz's work, The Sensations of Tone as a Physiological Basis for the Theory of Music.
Is there an answer to this question: Who wrote The Sensations of Tone as a Physiological Basis for the Theory of Music?

Answer: Hermann von Helmholtz

Question: The name iPod was proposed by Vinnie Chieco, a freelance copywriter, who (with others) was called by Apple to figure out how to introduce the new player to the public. After Chieco saw a prototype, he thought of the movie 2001: A Space Odyssey and the phrase "Open the pod bay door, Hal!", which refers to the white EVA Pods of the Discovery One spaceship. Chieco saw an analogy to the relationship between the spaceship and the smaller independent pods in the relationship between a personal computer and the music player. Apple researched the trademark and found that it was already in use. Joseph N. Grasso of New Jersey had originally listed an "iPod" trademark with the U.S. Patent and Trademark Office (USPTO) in July 2000 for Internet kiosks. The first iPod kiosks had been demonstrated to the public in New Jersey in March 1998, and commercial use began in January 2000, but had apparently been discontinued by 2001. The trademark was registered by the USPTO in November 2003, and Grasso assigned it to Apple Computer, Inc. in 2005.
Is there an answer to this question: What film inspired the name of the iPod?

Answer: 2001: A Space Odyssey

Question: Proto-Slavic, sometimes referred to as Common Slavic or Late Proto-Slavic, is defined as the last stage of the language preceding the geographical split of the historical Slavic languages. That language was uniform, and on the basis of borrowings from foreign languages and Slavic borrowings into other languages, cannot be said to have any recognizable dialects, suggesting a comparatively compact homeland. Slavic linguistic unity was to some extent visible as late as Old Church Slavonic manuscripts which, though based on local Slavic speech of Thessaloniki, could still serve the purpose of the first common Slavic literary language.
Is there an answer to this question: What did the Proto-slavic language have in multiple recognizable variations?

Answer:
unanswerable