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 (", ").

Example Input: Paragraph- Sent 1: Zinni feared that Bin Ladin would in the future locate himself in cities, where U.S. missiles could kill thousands of Afghans.
Sent 2: He worried also lest Pakistani authorities not get adequate warning, think the missiles came from India, RESPONSES TO AL QAEDA'S INITIAL ASSAULTS 135 and do something that everyone would later regret.
Sent 3: Discussing potential repercussions in the region of his military responsibility, Zinni said, "It was easy to take the shot from Washington and walk away from it.
Sent 4: We had to live there."Sent 5: Zinni's distinct preference would have been to build up counterterrorism capabilities in neighboring countries such as Uzbekistan.
Sent 6: But he told us that he could not drum up much interest in or money for such a purpose from Washington, partly, he thought, because these countries had dictatorial governments.
Sent 7: After the decision-in which fear of collateral damage was an important factor- not to use cruise missiles against Kandahar in December 1998, Shelton and officers in the Pentagon developed plans for using an AC-130 gunship instead of cruise missile strikes.
Sent 8: Designed specifically for the special forces, the version of the AC-130 known as "Spooky"can fly in fast or from high altitude, undetected by radar; guided to its zone by extraordinarily complex electronics, it is capable of rapidly firing precision-guided 25, 40, and 105 mm projectiles.
Sent 9: Because this system could target more precisely than a salvo of cruise missiles, it had a much lower risk of causing collateral damage.
Sent 10: After giving Clarke a briefing and being encouraged to proceed, Shelton formally directed Zinni and General Peter Schoomaker, who headed the Special Operations Command, to develop plans for an AC-130 mission against Bin Ladin's headquarters and infrastructure in Afghanistan.
Sent 11: The Joint Staff prepared a decision paper for deployment of the Special Operations aircraft.
Sent 12: Though Berger and Clarke continued to indicate interest in this option, the AC-130s were never deployed.
Sent 13: Clarke wrote at the time that Zinni opposed their use, and John Maher, the Joint Staff 's deputy director of operations, agreed that this was Zinni's position.
Sent 14: Zinni himself does not recall blocking the option.
Sent 15: He told us that he understood the Special Operations Command had never thought the intelligence good enough to justify actually moving AC-130s into position.
Sent 16: Schoomaker says, on the contrary, that he thought the AC-130 option feasible.
Sent 17: The most likely explanation for the two generals' differing recollections is that both of them thought serious preparation for any such operations would require a long-term redeployment of Special Operations forces to the Middle East or South Asia.
Sent 18: The AC-130s would need bases because the aircraft's unrefueled range was only a little over 2,000 miles.
Question: What option did Zinni deny blocking?.
Example Output: 13, 14.

Example Input: Paragraph- Sent 1: Bin Ladin and his aides did not need a very large sum to finance their planned attack on America.
Sent 2: The 9/11 plotters eventually spent somewhere between $400,000 and $500,000 to plan and conduct their attack.
Sent 3: Consistent with the importance of the project, al Qaeda funded the plotters.
Sent 4: KSM provided his operatives with nearly all the money they needed to travel to the United States, train, and live.
Sent 5: The plotters' tradecraft was not especially sophisticated, but it was good enough.
Sent 6: They moved, stored, and spent their money in ordinary ways, easily defeating the detection mechanisms in place at the time.
Sent 7: The origin of the funds remains unknown, although we have a general idea of how al Qaeda financed itself during the period leading up to 9/11.
Sent 8: General Financing As we explained in chapter 2, Bin Ladin did not fund al Qaeda through a personal fortune and a network of businesses in Sudan.
Sent 9: Instead, al Qaeda relied primarily on a fund-raising network developed over time.
Sent 10: The CIA now estimates that it cost al Qaeda about $30 million per year to sustain its activities before 9/11 and that this money was raised almost entirely through donations.
Sent 11: For many years, the United States thought Bin Ladin financed al Qaeda's expenses through a vast personal inheritance.
Sent 12: Bin Ladin purportedly inherited approximately $300 million when his father died, and was rumored to have had access to these funds to wage jihad while in Sudan and Afghanistan and to secure his leadership position in al Qaeda.
Sent 13: In early 2000, the U.S. government discovered a different reality: roughly from 1970 through 1994, Bin Ladin received about $1 million per year-a significant sum, to be sure, but not a $300 million fortune that could be used to fund jihad.
Sent 14: Then, as part of a Saudi government crackdown early in the 1990s, the Bin Ladin family was forced to find a buyer for Usama's share of the family company in 1994.
Sent 15: The Saudi government subsequently froze the proceeds of the sale.
Sent 16: This action had the effect of divesting Bin Ladin of what otherwise might indeed have been a large fortune.
Sent 17: Nor were Bin Ladin's assets in Sudan a source of money for al Qaeda.
Sent 18: When Bin Ladin lived in Sudan from 1991 to 1996, he owned a number of businesses and other assets.
Question: How did Bin Laden fund the attack against America?.
Example Output: 1, 2, 3.

Example Input: Paragraph- Sent 1: Eric , a young boy , is excited about his birthday after reading a book and believes that a train will come for him , despite his sister Jill 's disbelief .
Sent 2: A few hours later , the train station 's control tower wakes up and in the roundhouse , Tillie , a young little blue switcher engine , along with her best bird friend , Chip , wakes up four other trains : Georgia , a kind all-purpose engine , Farnsworth , a stuck-up passenger engine , Jebediah , a worn-out old engine , and Pete , a gruff , burly freight engine .
Sent 3: After the tower assigns Farnsworth and Pete their jobs , Tillie tries to help with the milk train assigned to Jebediah , but the tower insists that she is too small for the job .
Sent 4: Georgia is assigned to pull the birthday train .
Sent 5: A clown named Rollo leads the toys into the train , including Stretch , a basketball player ; Missy , a ballerina ; a Handy Pandy , a panda ; Perky , an elephant ; and Grumpella , a stuffed bird .
Sent 6: During her journey , Georgia breaks down and is taken back to the roundhouse by Doc .
Sent 7: Left behind , Rollo eventually takes Doc 's advice of flagging down one of the other engines returning from their daily runs over the mountain .
Sent 8: Farnsworth and Pete turn down their offers to pull the train .
Sent 9: Meanwhile , Tillie asks the tower to rescue the stranded train , but he insists that Tillie will never do the job .
Sent 10: Jebediah turns down his offer to pull the train because of his age , and returns to the roundhouse .
Sent 11: Chip and Tillie sneak past the sleeping tower and pulls the birthday train up a mountain .
Question: What was Eric's belief after reading a book?.
Example Output:
1.