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 (", ").

[Q]: Paragraph- Sent 1: What happens when a diver jumps off the diving board?
Sent 2: His gravitational potential energy changes to kinetic energy as he falls.
Sent 3: In other words, he falls faster and faster until reaching the water.
Sent 4: However, he can always regain his potential energy.
Sent 5: All he must do is get out of the water and climb back up.
Sent 6: This requires an input of kinetic energy.
Sent 7: These changes in energy are examples of energy conversion.
Sent 8: Energy can be converted from one form to another.
Sent 9: It can also be transferred from one object to another.
Sent 10: Think back to the leaf example.
Sent 11: The leaf was hanging from a branch.
Sent 12: At this time, it had gravitational potential energy.
Sent 13: As it came loose from the branch, gravity pulled it toward the ground.
Sent 14: The leaf started to fall, or move, toward the ground.
Sent 15: Its potential energy was changed into motion.
Sent 16: As it landed on the ground, it stopped moving.
Sent 17: As it lays on the ground, it has no potential to move.
Sent 18: If it does move it is because something else transferred energy to it.
Question: What are examples of energy conversion?.
[A]: 2, 4, 5, 6, 7.

[Q]: Paragraph- Sent 1: Imagine you are standing in a farm field in central Illinois.
Sent 2: The land is so flat you can see for miles and miles.
Sent 3: On a clear day, you might see a grain silo 20 miles away.
Sent 4: You might think to yourself, it sure is flat around here.
Sent 5: If you drive one hundred miles to the south, the landscape changes.
Sent 6: In southern Illinois, there are rolling hills.
Sent 7: Why do you think this is?
Sent 8: What could have caused these features?
Sent 9: There are no big rivers that may have eroded and deposited this material.
Sent 10: The ground is capable of supporting grass and trees, so wind erosion would not explain it.
Sent 11: To answer the question, you need to go back 12,000 years.
Sent 12: Around 12,000 years ago, a giant ice sheet covered much of the midwest United States.
Sent 13: Springfield, Illinois, was covered by over a mile of ice.
Sent 14: Its hard to imagine a mile thick sheet of ice.
Sent 15: The massive ice sheet, called a glacier, caused the features on the land you see today.
Sent 16: Where did glaciers go?
Sent 17: Where can you see them today?
Sent 18: Glaciers are masses of flowing ice.
Question: What features did the glaciers cause in Illinois?.
[A]: 6, 15.

[Q]: Paragraph- Sent 1: As noted above, the 9/11 plotters spent somewhere between $400,000 and $500,000 to plan and conduct their attack.
Sent 2: The available evidence indicates that the 19 operatives were funded by al Qaeda, either through wire transfers or cash provided by KSM, which they carried into the United States or deposited in foreign accounts and accessed from this country.
Sent 3: Our investigation has uncovered no credible evidence that any person in the United States gave the hijackers substantial financial assistance.
Sent 4: Similarly, we have seen no evidence that any foreign government-or foreign government official-supplied any funding.
Sent 5: We have found no evidence that the Hamburg cell members (Atta, Shehhi, Jarrah, and Binalshibh) received funds from al Qaeda before late 1999.
Sent 6: It appears they supported themselves.
Sent 7: KSM, Binalshibh, and another plot facilitator, Mustafa al Hawsawi, each received money, in some cases perhaps as much as $10,000, to perform their roles in the plot.
Sent 8: After the Hamburg recruits joined the 9/11 conspiracy, al Qaeda began giving them money.
Sent 9: Our knowledge of the funding during this period, before the operatives entered the United States, remains murky.
Sent 10: According to KSM, the Hamburg cell members each received $5,000 to pay for their return to Germany from Afghanistan after they had been selected to join the plot, and they received additional funds for travel from Germany to the United States.
Sent 11: Financial transactions of the plotters are discussed in more detail in chapter 7.
Sent 12: Requirements for a Successful Attack As some of the core operatives prepared to leave for the United States, al Qaeda's leaders could have reflected on what they needed to be able to do in order to organize and conduct a complex international terrorist operation to inflict catastrophic harm.
Sent 13: We believe such a list of requirements would have included leaders able to evaluate, approve, and supervise the planning and direction of the operation; communications sufficient to enable planning and direction of the operatives and those who would be helping them; a personnel system that could recruit candidates, vet them, indoctrinate them, and give them necessary training; an intelligence effort to gather required information and form assessments of enemy strengths and weaknesses; the ability to move people; and the ability to raise and move the necessary money.
Sent 14: The information we have presented about the development of the planes operation shows how, by the spring and summer of 2000, al Qaeda was able to meet these requirements.
Sent 15: By late May 2000, two operatives assigned to the planes operation were already in the United States.
Sent 16: Three of the four Hamburg cell members would soon arrive.
Question: After what time would three of four Hamburg cell members soon arrive?.
[A]:
15, 16.