Problem: Aspirated consonant:

Voiceless consonants are produced with the vocal folds open (spread) and not vibrating, and voiced consonants are produced when the vocal folds are fractionally closed and vibrating (modal voice). Voiceless aspiration occurs when the vocal cords remain open after a consonant is released. An easy way to measure this is by noting the consonant's voice-onset time, as the voicing of a following vowel cannot begin until the vocal cords close.

What can not begin until after the vocal cords open?
---
A: unanswerable


Problem: Switzerland:

Switzerland has a stable, prosperous and high-tech economy and enjoys great wealth, being ranked as the wealthiest country in the world per capita in multiple rankings. In 2011 it was ranked as the wealthiest country in the world in per capita terms (with "wealth" being defined to include both financial and non-financial assets), while the 2013 Credit Suisse Global Wealth Report showed that Switzerland was the country with the highest average wealth per adult in 2013. It has the world's nineteenth largest economy by nominal GDP and the thirty-sixth largest by purchasing power parity. It is the twentieth largest exporter, despite its small size. Switzerland has the highest European rating in the Index of Economic Freedom 2010, while also providing large coverage through public services. The nominal per capita GDP is higher than those of the larger Western and Central European economies and Japan. If adjusted for purchasing power parity, Switzerland ranks 8th in the world in terms of GDP per capita, according to the World Bank and IMF (ranked 15th according to the CIA Worldfactbook).

How does the Swiss economy rank worldwide by purchasing power parity?
---
A: thirty-sixth largest


Problem: Memory:

The storage in sensory memory and short-term memory generally has a strictly limited capacity and duration, which means that information is not retained indefinitely. By contrast, long-term memory can store much larger quantities of information for potentially unlimited duration (sometimes a whole life span). Its capacity is immeasurable. For example, given a random seven-digit number we may remember it for only a few seconds before forgetting, suggesting it was stored in our short-term memory. On the other hand, we can remember telephone numbers for many years through repetition; this information is said to be stored in long-term memory.

Short term memory can remember telephone numbers for many years though what?
---
A: unanswerable


Problem: Department store:

In Denmark you find three department store chains: Magasin (1868), Illum (1891), Salling (1906). Magasin is by far the largest with 6 stores all over the country, with the flagship store being Magasin du Nord on Kongens Nytorv in Copenhagen. Illums only store on Amagertorv in Copenhagen has the appearance of a department store with 20% run by Magasin, but has individual shop owners making it a shopping centre. But in people's mind it remains a department store. Salling has two stores in Jutland with one of these being the reason for the closure of a magasin store due to the competition.

What are the 4 main department store companies in Denmark? 
---
A:
unanswerable