Input: Read this: Two airports serve Philadelphia: the Philadelphia International Airport (PHL), straddling the southern boundary of the city, and the Northeast Philadelphia Airport (PNE), a general aviation reliever airport in Northeast Philadelphia. Philadelphia International Airport provides scheduled domestic and international air service, while Northeast Philadelphia Airport serves general and corporate aviation. In 2013, Philadelphia International Airport was the 15th busiest airport in the world measured by traffic movements (i.e. takeoffs and landings). It is also the second largest hub and primary international hub for American Airlines.
Question: Name the main airport?

Output: Philadelphia International Airport (PHL)

QUES: There has been an increasing gulf between the Premier League and the Football League. Since its split with the Football League, many established clubs in the Premier League have managed to distance themselves from their counterparts in lower leagues. Owing in large part to the disparity in revenue from television rights between the leagues, many newly promoted teams have found it difficult to avoid relegation in their first season in the Premier League. In every season except 200102 and 201112, at least one Premier League newcomer has been relegated back to the Football League. In 199798 all three promoted clubs were relegated at the end of the season.

When in 1997-98 were the four promoted clubs relegated?
What is the answer?
ANS: unanswerable

QUES: Dell previously had its headquarters in the Arboretum complex in northern Austin, Texas. In 1989 Dell occupied 127,000 square feet (11,800 m2) in the Arboretum complex. In 1990, Dell had 1,200 employees in its headquarters. In 1993, Dell submitted a document to Round Rock officials, titled "Dell Computer Corporate Headquarters, Round Rock, Texas, May 1993 Schematic Design." Despite the filing, during that year the company said that it was not going to move its headquarters. In 1994, Dell announced that it was moving most of its employees out of the Arboretum, but that it was going to continue to occupy the top floor of the Arboretum and that the company's official headquarters address would continue to be the Arboretum. The top floor continued to hold Dell's board room, demonstration center, and visitor meeting room. Less than one month prior to August 29, 1994, Dell moved 1,100 customer support and telephone sales employees to Round Rock. Dell's lease in the Arboretum had been scheduled to expire in 1994.
What year did Dell announce that it was moving most of its employees into Texas?

ANS: unanswerable

The region's economy greatly depends on agriculture; rice and rubber have long been prominent exports. Manufacturing and services are becoming more important. An emerging market, Indonesia is the largest economy in this region. Newly industrialised countries include Indonesia, Malaysia, Thailand, and the Philippines, while Singapore and Brunei are affluent developed economies. The rest of Southeast Asia is still heavily dependent on agriculture, but Vietnam is notably making steady progress in developing its industrial sectors. The region notably manufactures textiles, electronic high-tech goods such as microprocessors and heavy industrial products such as automobiles. Oil reserves in Southeast Asia are plentiful.
If it is possible to answer this question, answer it for me (else, reply "unanswerable"): As an emerging market Indonesia has the smallest what?
Ah, so.. unanswerable

Question: Through most of Shell's early history, the Shell Oil Company business in the United States was substantially independent with its stock being traded on the NYSE and with little direct involvement from the group's central offices in the running of the American business. However, in 1984, Royal Dutch Shell made a bid to purchase those shares of Shell Oil Company it did not own (around 30%) and despite opposition from some minority shareholders, which led to a court case, Shell completed the buyout for a sum of $5.7 billion.
Try to answer this question if possible: How much did the court case cost?
Answer: unanswerable

Problem: The set G is called the underlying set of the group (G, ). Often the group's underlying set G is used as a short name for the group (G, ). Along the same lines, shorthand expressions such as "a subset of the group G" or "an element of group G" are used when what is actually meant is "a subset of the underlying set G of the group (G, )" or "an element of the underlying set G of the group (G, )". Usually, it is clear from the context whether a symbol like G refers to a group or to an underlying set.
A subset of the underlying set G of the group (G) cannot be written using what kind of expression?
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Answer:
unanswerable