Problem: Iranian languages:

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 kind of substrate is Middle Iranian?
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A: unanswerable

Problem: Despite these criticisms, Comcast has appeared on multiple "top places to work" lists. In 2009, it was included on CableFAX magazine's "Top 10 Places to Work in Cable", which cited its "scale, savvy and vision". Similarly, the Philadelphia Business Journal awarded Comcast the silver medal among extra-large companies in Philadelphia, with the gold medal going to partner organization, Comcast-Spectacor. The Boston Globe found Comcast to be that city's top place to work in 2009. Employee diversity is also an attribute upon which Comcast receives strong marks. In 2008, Black Enterprise magazine rated Comcast among the top 15 companies for workforce diversity. Comcast was also named a "Top 2014 Workplace" by the Washington Post in their annual feature.
What company lacks employee diversity?
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Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
From the Rigveda until the time of Panini (fourth century BCE) the development of the early Vedic language can be observed in other Vedic texts: the Samaveda, Yajurveda, Atharvaveda, Brahmanas, and Upanishads. During this time, the prestige of the language, its use for sacred purposes, and the importance attached to its correct enunciation all served as powerful conservative forces resisting the normal processes of linguistic change. However, there is a clear, five-level linguistic development of Vedic from the Rigveda to the language of the Upanishads and the earliest sutras such as the Baudhayana sutras.
How was Sanskrit viewed to be in relation to maintaining class?
A: conservative

Context and question: In a grounded-emitter transistor circuit, such as the light-switch circuit shown, as the base voltage rises, the emitter and collector currents rise exponentially. The collector voltage drops because of reduced resistance from collector to emitter. If the voltage difference between the collector and emitter were zero (or near zero), the collector current would be limited only by the load resistance (light bulb) and the supply voltage. This is called saturation because current is flowing from collector to emitter freely. When saturated, the switch is said to be on.
Why does the collector voltage drop in grounded-emitter transistor circuits?
Answer: reduced resistance from collector to emitter

Question: Safari and Mobile Safari were likewise always included with OS X and iOS respectively, so, similarly, they were originally funded by sales of Apple computers and mobile devices, and formed part of the overall Apple experience to customers.
Is there an answer to this question: What are mobile devices included with?

Answer: unanswerable

Problem: New Haven, Connecticut:

In 2004, the first bike lane in the city was added to Orange Street, connecting East Rock Park and the East Rock neighborhood to downtown. Since then, bike lanes have also been added to sections of Howard Ave, Elm St, Dixwell Avenue, Water Street, Clinton Avenue and State Street. The city has created recommended bike routes for getting around New Haven, including use of the Canal Trail and the Orange Street lane. A bike map of the city entire can be seen here , and bike maps broken down by area here . As of the end of 2012, bicycle lanes have also been added in both directions on Dixwell Avenue along most of the street from downtown to the Hamden town line, as well as along Howard Avenue from Yale New Haven Hospital to City Point.

How is it possible to located the direction of bike lanes within the city?
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A:
bike map of the city