TASK DEFINITION: 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 (", ").
PROBLEM: 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?.

SOLUTION: 12, 13.

PROBLEM: Paragraph- Sent 1: After the last assassination attempt in February 1880, Count Loris-Melikov was appointed the head of the Supreme Executive Commission and given extraordinary powers to fight the revolutionaries.
Sent 2: Loris-Melikov's proposals called for some form of parliamentary body, and the Emperor seemed to agree; these plans were never realised.
Sent 3: On 13 March (1 March Old Style Date), 1881, Alexander fell victim to an assassination plot in Saint Petersburg.
Sent 4: As he was known to do every Sunday for many years, the emperor went to the Mikhailovsky Manege for the military roll call.
Sent 5: He travelled both to and from the Manege in a closed carriage accompanied by five Cossacks and Frank (Franciszek) Joseph Jackowski, a Polish noble, with a sixth Cossack sitting on the coachman's left.
Sent 6: The emperor's carriage was followed by two sleighs carrying, among others, the chief of police and the chief of the emperor's guards.
Sent 7: The route, as always, was via the Catherine Canal and over the Pevchesky Bridge.
Sent 8: The street was flanked by narrow pavements for the public.
Sent 9: A young member of the Narodnaya Volya ("People's Will") movement, Nikolai Rysakov, was carrying a small white package wrapped in a handkerchief.
Question: What was Alexander's political role?.

SOLUTION: 3, 4.

PROBLEM: Paragraph- Sent 1: In her storage room-turned-office, Jennifer Baum works under an expanding leak that is causing the ceiling to turn brown and crumble.
Sent 2: Mold grows in the buckets positioned to catch the water.
Sent 3: She shrugs it off.
Sent 4: Outside her office she has taped up a clear plastic suit, and a sign that reads, "All employees must don protective gear before coming in."Sent 5: Such is life in limbo.
Sent 6: Nearly a year after Sept. 11, the Legal Aid Society-the lawyers for New York's poor and homeless-remains, well, homeless.
Sent 7: The nonprofit has been barred from returning to its 90 Church St. headquarters, across from the World Trade Center site, because of environmental concerns.
Sent 8: Legal Aid has uncomfortable company.
Sent 9: More than 11,500 New Yorkers continue to work out of temporary space, according to analysis by Manhattan-based real estate brokerage TenantWise.com Inc. and Crain's New York Business.
Sent 10: That's 8% of the 137,000 workers who lost their offices or access to them when the Twin Towers collapsed.
Sent 11: Legal Aid's 450 displaced attorneys and staffers have spent the past 12 months spread among previously unused spaces-some unused for good reason-in the nonprofit's other offices.
Sent 12: It could be another year and a half before they return to their old desks.
Sent 13: They have contended with difficult working conditions as demand for Legal Aid's services is on the rise because of Sept. 11 and the deteriorating economy.
Sent 14: The civil division is spread among a few boroughs.
Sent 15: Their papers and documents, some 20,000 boxes worth, are stuck in a storage facility in Linden, N.J. "I am counting the days till we can have all the parts back in one place," says Steven Banks, Legal Aid's associate attorney in chief.
Sent 16: In the memories of the exiled workers, the old office has achieved mythical proportions.
Sent 17: They say the wood paneling and rugs had the ability to cool emotions and lift spirits.
Sent 18: The Legal Aid office on Montague Street in Brooklyn Heights, where 65 displaced workers have cobbled together space amid the faded and scratched walls, looks more like a bargain basement.
Question: Which nonprofit organization had headquarters at 90 Church St., across from the World Trade Center site?.

SOLUTION:
6, 7.