Problem: Compact disc:

Meanwhile, with the advent and popularity of Internet-based distribution of files in lossily-compressed audio formats such as MP3, sales of CDs began to decline in the 2000s. For example, between 2000 - 2008, despite overall growth in music sales and one anomalous year of increase, major-label CD sales declined overall by 20%, although independent and DIY music sales may be tracking better according to figures released 30 March 2009, and CDs still continue to sell greatly. As of 2012, CDs and DVDs made up only 34 percent of music sales in the United States. In Japan, however, over 80 percent of music was bought on CDs and other physical formats as of 2015.

What percentage of music sales do MP3s make up?
---
A: unanswerable

Problem: Glacial abrasion is commonly characterized by glacial striations. Glaciers produce these when they contain large boulders that carve long scratches in the bedrock. By mapping the direction of the striations, researchers can determine the direction of the glacier's movement. Similar to striations are chatter marks, lines of crescent-shape depressions in the rock underlying a glacier. They are formed by abrasion when boulders in the glacier are repeatedly caught and released as they are dragged along the bedrock.
What charactrerizes glacial striations?
---
Answer: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
As this process continued, the missile found itself being used for more and more of the roles formerly filled by guns. First to go were the large weapons, replaced by equally large missile systems of much higher performance. Smaller missiles soon followed, eventually becoming small enough to be mounted on armored cars and tank chassis. These started replacing, or at least supplanting, similar gun-based SPAAG systems in the 1960s, and by the 1990s had replaced almost all such systems in modern armies. Man-portable missiles, MANPADs as they are known today, were introduced in the 1960s and have supplanted or even replaced even the smallest guns in most advanced armies.
When were MANPADs introduced?
A: the 1960s

Context and question: Puppetry and shadow plays were also a favoured form of entertainment in past centuries, a famous one being Wayang from Indonesia. The arts and literature in some of Southeast Asia is quite influenced by Hinduism, which was brought to them centuries ago. Indonesia, despite conversion to Islam which opposes certain forms of art, has retained many forms of Hindu-influenced practices, culture, art and literature. An example is the Wayang Kulit (Shadow Puppet) and literature like the Ramayana. The wayang kulit show has been recognized by UNESCO on November 7, 2003, as a Masterpiece of Oral and Intangible Heritage of Humanity.
What is a famous shadow play from India?
Answer: unanswerable

Question: From 1988 to 1997, the BBC and Sky Sports had coverage of the FA Cup, the BBC had highlights on Match of the Day and usually one match per round while Sky had the same deal. From 1997 to 2001, ITV and Sky shared live coverage with both having two matches per round and BBC continuing with highlights on Match of the Day. From 2002 to 2008, BBC and Sky again shared coverage with BBC having two or three matches per round and Sky having one or two. From 200809 to 201314, FA Cup matches are shown live by ITV across England and Wales, with UTV broadcasting to Northern Ireland but STV refusing to show them. ITV shows 16 FA Cup games per season, including the first pick of live matches from each of the first to sixth rounds of the competition, plus one semi-final exclusively live. The final is also shown live on ITV. Under the same 2008 contract, Setanta Sports showed three games and one replay in each round from round three to five, two quarter-finals, one semi-final and the final. The channel also broadcast ITV's matches exclusively to Scotland, after the ITV franchise holder in Scotland, STV, decided not to broadcast FA Cup games. Setanta entered administration in June 2009 and as a result the FA terminated Setanta's deal to broadcast FA-sanctioned competitions and England internationals. As a result of Setanta going out of business ITV showed the competition exclusively in the 200910 season with between three and four matches per round, all quarter finals, semi-finals and final live as the FA could not find a pay TV broadcaster in time. ESPN bought the competition for the 201011 to 201213 season and during this time Rebecca Lowe became the first woman to host the FA Cup Final in the UK.
Is there an answer to this question: What network has never covered the FA Cup?

Answer: unanswerable

In 1629, the Massachusetts Bay Colony's first governor, John Winthrop, led the signing of the Cambridge Agreement, a key founding document of the city. Puritan ethics and their focus on education influenced its early history; America's first public school was founded in Boston in 1635. Over the next 130 years, the city participated in four French and Indian Wars, until the British defeated the French and their native allies in North America. Boston was the largest town in British North America until Philadelphia grew larger in the mid 18th century.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): How many french and Indian wars did Boston participate in?
Ah, so..
four