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 (", ").

Paragraph- Sent 1: Energy often changes from one form to another.
Sent 2: For example, the drummer transfers motion to sound energy.
Sent 3: When the moving drumstick strikes the drum head, the drum starts to vibrate.
Sent 4: The motion of the vibrating drum head creates the sound you hear.
Sent 5: Any form of energy can change into any other form.
Sent 6: Frequently, one form of energy changes into two or more different forms.
Sent 7: Have you ever sat in front of a campfire?
Sent 8: What are two things you notice?
Sent 9: The fire creates light.
Sent 10: It is also warm by the fire, meaning it creates heat.
Sent 11: The energy of the fire comes from the stored energy in the wood.
Sent 12: The wood contains chemical energy.
Sent 13: As it burns, the chemical energy is changed into light and heat.
Sent 14: Not all chemical energy changes produce light and heat.
Sent 15: Our cars use gasoline as a fuel.
Sent 16: Gasoline contains chemical energy.
Sent 17: When our cars burn gasoline in their engines, it is converted into motion and heat.
Sent 18: When energy changes forms, energy is conserved.
Question: drummers transform chemical energy into what ?.
2, 3.

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?.
1, 2, 3.

Paragraph- Sent 1: Before the mysterious disappearance of one of its passenger jets this month, Malaysia wasn't a country used to finding itself dominating headlines around the world.
Sent 2: Some of its Southeast Asian neighbors, including Indonesia and the Philippines, have suffered devastating natural disasters in recent years and are all too familiar with the media frenzy that accompanies a major crisis.
Sent 3: But Malaysia has largely managed to stay out of the international spotlight since its independence from British colonial rule more than half a century ago.
Sent 4: "It is one of these countries, because of its geography, that doesn't have earthquakes," said Ernest Bower, senior adviser for Southeast Asia studies at the Center for Strategic and International Studies.
Sent 5: "It doesn't have tsunamis.
Sent 6: It hasn't been tested with a disaster like this."Sent 7: The disappearance of Malaysia Airlines Flight 370 has thrust the government into the dazzling glare of worldwide attention.
Sent 8: And it hasn't emerged with very good grades.
Sent 9: "I think on a stress test, they're failing," Bower told CNN's Jake Tapper, pointing to the government's coordination of different agencies and communication with other countries.
Sent 10: China among critics Criticism and complaints have come from other countries involved in the search for the missing plane, including China and Vietnam, and from the relatives of passengers.
Sent 11: Malaysian officials have created confusion by issuing contradictory statements on key aspects of the investigation.
Sent 12: The majority of the people on board the plane were Chinese, and Beijing has increasingly voiced its displeasure with the search, especially after Malaysia announced over the weekend that evidence suggested the plane had been deliberately flown west into the Indian Ocean, away from its last confirmed location over the South China Sea.
Sent 13: "The new information means the intensive search in the South China Sea for the whole past week was worthless and would never bear fruit," said a commentary published by China's state-run news agency Xinhua.
Sent 14: "Even worse, the golden time for saving possible survivors, if any, was generously wasted.".
Question: What are two example of natural disasters that Malaysia does not experience?.
3, 4, 5.