You are given a paragraph, with numbered sentences, and a question. Write the numbers of the sentences needed to answer the given question. Separate multiple sentence numbers with a comma (", "). E.g. "1, 2" would be the correct response if Sent 1 and Sent 2 are needed to answer the given question (do not include sentences that contain no information that is necessary to answer the question). Sort the sentence numbers in an increasing order (i.e., '1, 2', instead of '2, 1'). Your answer should not contain anything than the sentence numbers separated by a comma (e.g. '1, 2, 3, 4'). The given question requires more than one sentence to answer. So, your answer must contain at least one comma (", ").

[EX Q]: Paragraph- Sent 1: The British Arrive: " Albert is so amused," wrote Queen Victoria, "at my having got the island of Hong Kong.
Sent 2: " Her foreign secretary, Lord Palmerston, was not so amused; he dismissed Hong Kong as "a barren island with hardly a house upon it.
Sent 3: " Hong Kong Island formally became a British possession two years later in 1843.
Sent 4: The British now had a base for the thriving trade they had carried on from Canton.
Sent 5: Trading conditions, however, were not easy.
Sent 6: The attitude expressed by Emperor Qianlong at Britian's first attempt to open trade with China in 1793 continued to prevail: "We possess all things," said the emperor, "I set no value on objects strange or ingenious, and have no use for your country's manufactures." Moreover, China would accept nothing but silver bullion in exchange for its goods, so Britian had to look for a more abundant commodity to square its accounts.
Sent 7: Around the end of the 18th century, the traders found a solution: Opium was the wonder drug that would solve the problem.
Sent 8: Grown in India, it was delivered to Canton, and while China outlawed the trade in 1799, local Cantonese officials were always willing to look the other way for "squeeze money" (a term still used in Hong Kong).
Sent 9: In 1839 the emperor appointed the incorruptible Commissioner Lin Tse-hsu to stamp out the smuggling of "foreign mud.
Sent 10: " Lin's crackdown was indeed severe.
Sent 11: He demanded that the British merchants in Canton surrender their opium stores, and to back up his ultimatum he laid siege to the traders, who, after six tense weeks, surrendered over 20,000 chests of opium.
Sent 12: To Queen Victoria, Lin addressed a famous letter, pointing out the harm the "poisonous drug" did to China, and asking for an end to the opium trade; his arguments are unanswerable, but the lofty though heartfelt tone of the letter shows how unprepared the Chinese were to negotiate with the West in realistic terms.
Sent 13: A year later, in June 1840, came the British retaliation, beginning the first of the so-called Opium Wars.
Sent 14: After a few skirmishes and much negotiation, a peace agreement was reached.
Sent 15: Under the Convention of Chuenpi, Britain was given the island of Hong Kong, and on 26 January 1841, it was proclaimed a British colony.
Question: Who's foreign secretary is Lord Palmerston?.
[EX A]: 1, 2.

[EX Q]: Paragraph- Sent 1: Hurlburt Field, Florida (CNN) -- An Air Force CV-22 Osprey crashed Wednesday during a routine training mission north of Navarre, Florida, injuring five crew members aboard, a military official said.
Sent 2: The crash occurred about 6:45 p.m.
Sent 3: at Hurlburt Field's Eglin Range, said Amy Nicholson, chief of public affairs at the airfield.
Sent 4: The five injured crew members were taken to an area hospital, Nicholson said.
Sent 5: The extent of their injuries was not immediately known.
Sent 6: The cause of the accident is under investigation, she said.
Sent 7: The Osprey was assigned to the 1st Special Operations Wing, the Air Force said.
Sent 8: The tilt-rotor aircraft can fly like an airplane and land like a helicopter.
Sent 9: The Army began developing the Osprey in 1982, though the program was nearly scrapped in 1989 when then-Secretary of Defense Dick Cheney sought to cancel it because of ballooning costs.
Sent 10: Questions were raised about the safety of the Osprey after two crashes, including one in 1992 at a Marine Corps air base in Virginia that killed the crew.
Sent 11: In late 2000, the Marine Corps grounded the Osprey fleet after two crashes -- one in Arizona that killed four crew members and 15 passengers, and another in North Carolina that killed the crew.
Sent 12: A redesign was ordered on the Osprey, and it resumed flights in 2002.
Sent 13: The Air Force began using Ospreys in 2008 after testing the aircraft in 2006.
Sent 14: They were first deployed by the Marines in Iraq in 2007 after 18 years and $20 billion in development.
Question: After the Osprey resumed flights in 2002 how long did it take for the Air Force to begin using the aircraft?.
[EX A]: 12, 13.

[EX Q]: Paragraph- Sent 1: Take a look at this train in Figure 1.11.
Sent 2: It looks very futuristic.
Sent 3: What do you notice about it?
Sent 4: Did you notice that the train has no wheels?
Sent 5: How can a train have no wheels?
Sent 6: It doesn't need wheels.
Sent 7: It actually floats, or levitates, just above the track.
Sent 8: Magnets enable the train to do this.
Sent 9: This is not a normal train.
Sent 10: This is a maglev train.
Sent 11: The word maglev stands for magnetic levitation.
Sent 12: Because it has no wheels, there is no friction.
Sent 13: Some magnets hold the train up.
Sent 14: Other magnets are used to move the train forward.
Sent 15: This train can go very fast.
Sent 16: It can reach speeds up to 480 kilometers (300 miles) per hour!
Sent 17: Magnets are pretty cool.
Sent 18: What exactly is a magnet?
Sent 19: How is it able to exert such force?.
Question: When will a train have no friction?.
[EX A]:
2.