Problem: In addition to Old Persian and Avestan, which are the only directly attested Old Iranian languages, all Middle Iranian languages must have had a predecessor "Old Iranian" form of that language, and thus can all be said to have had an (at least hypothetical) "Old" form. Such hypothetical Old Iranian languages include Carduchi (the hypothetical predecessor to Kurdish) and Old Parthian. Additionally, the existence of unattested languages can sometimes be inferred from the impact they had on neighbouring languages. Such transfer is known to have occurred for Old Persian, which has (what is called) a "Median" substrate in some of its vocabulary. Also, foreign references to languages can also provide a hint to the existence of otherwise unattested languages, for example through toponyms/ethnonyms or in the recording of vocabulary, as Herodotus did for what he called "Scythian".
What cannot be inferred from the impact on a neighboring language?
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Answer: unanswerable


Problem: 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.
What did the iMac need to use in order to read CDs or other media?
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Answer: unanswerable


Problem: On 28 April 2015, the Iranian navy seized the Marshall Island-flagged MV Maersk Tigris near the Strait of Hormuz. The ship had been chartered by Germany's Rickmers Ship Management, which stated that the ship contained no special cargo and no military weapons. The ship was reported to be under the control of the Iranian Revolutionary Guard according to the Pentagon. Tensions escallated in the region due to the intensifying of Saudi-led coalition attacks in Yemen. The Pentagon reported that the destroyer USS Farragut and a maritime reconnaissance aircraft were dispatched upon receiving a distress call from the ship Tigris and it was also reported that all 34 crew members were detained. US defense officials have said that they would review U.S. defense obligations to the Government of the Marshall Islands in the wake of recent events and also condemned the shots fired at the bridge as "inappropriate". It was reported in May 2015 that Tehran would release the ship after it paid a penalty.
How many crew members were on the MV Maersk Tigris?
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Answer:
34