Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In 1998, Apple introduced its new iMac which, like the original 128K Mac, was an all-in-one computer. Its translucent plastic case, originally Bondi blue and later various additional colors, is considered an industrial design landmark of the late 1990s. The iMac did away with most of Apple's standard (and usually proprietary) connections, such as SCSI and ADB, in favor of two USB ports. It replaced a floppy disk drive with a CD-ROM drive for installing software, but was incapable of writing to CDs or other media without external third-party hardware. The iMac proved to be phenomenally successful, with 800,000 units sold in 139 days. It made the company an annual profit of US$309 million, Apple's first profitable year since Michael Spindler took over as CEO in 1995. This aesthetic was applied to the Power Macintosh and later the iBook, Apple's first consumer-level laptop computer, filling the missing quadrant of Apple's "four-square product matrix" (desktop and portable products for both consumers and professionals). More than 140,000 pre-orders were placed before it started shipping in September, and by October proved to be a large success.
How many iMac units sold in the first 193 days?
A: unanswerable

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The most common forms of uranium oxide are triuranium octoxide (U
3O
8) and UO
2. Both oxide forms are solids that have low solubility in water and are relatively stable over a wide range of environmental conditions. Triuranium octoxide is (depending on conditions) the most stable compound of uranium and is the form most commonly found in nature. Uranium dioxide is the form in which uranium is most commonly used as a nuclear reactor fuel. At ambient temperatures, UO
2 will gradually convert to U
3O
8. Because of their stability, uranium oxides are generally considered the preferred chemical form for storage or disposal.
What is the stablest uranium compound?
A: Triuranium octoxide

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Miami's tropical weather allows for year-round outdoors activities. The city has numerous marinas, rivers, bays, canals, and the Atlantic Ocean, which make boating, sailing, and fishing popular outdoors activities. Biscayne Bay has numerous coral reefs which make snorkeling and scuba diving popular. There are over 80 parks and gardens in the city. The largest and most popular parks are Bayfront Park and Bicentennial Park (located in the heart of Downtown and the location of the American Airlines Arena and Bayside Marketplace), Tropical Park, Peacock Park, Morningside Park, Virginia Key, and Watson Island.
Why can indoor activities take place all year in Miami?
A: unanswerable

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The Angel, Islington was formerly a coaching inn, the first on the route northwards out of London, where Thomas Paine is believed to have written much of The Rights of Man. It was mentioned by Charles Dickens, became a Lyons Corner House, and is now a Co-operative Bank.
What writer mentioned The Angel pub in his writings?
A:
Charles Dickens