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: Assisting Zionist causes Einstein was a figurehead leader in helping establish the Hebrew University of Jerusalem, which opened in 1925, and was among its first Board of Governors.
Sent 2: Earlier, in 1921, he was asked by the biochemist and president of the World Zionist Organization, Chaim Weizmann, to help raise funds for the planned university.
Sent 3: He also submitted various suggestions as to its initial programs.
Sent 4: Among those, he advised first creating an Institute of Agriculture in order to settle the undeveloped land.
Sent 5: That should be followed, he suggested, by a Chemical Institute and an Institute of Microbiology, to fight the various ongoing epidemics such as malaria, which he called an "evil" that was undermining a third of the country's development.
Sent 6: Establishing an Oriental Studies Institute, to include language courses given in both Hebrew and Arabic, for scientific exploration of the country and its historical monuments, was also important.
Sent 7: Chaim Weizmann later became Israel's first president.
Sent 8: Upon his death while in office in November 1952 and at the urging of Ezriel Carlebach, Prime Minister David Ben-Gurion offered Einstein the position of President of Israel, a mostly ceremonial post.
Sent 9: The offer was presented by Israel's ambassador in Washington, Abba Eban, who explained that the offer "embodies the deepest respect which the Jewish people can repose in any of its sons".
Sent 10: Einstein declined, and wrote in his response that he was "deeply moved", and "at once saddened and ashamed" that he could not accept it.
Question: Who presented the offer of the ceremonial position of president to Einstein?.
Example Output: 8, 9.

Example Input: Paragraph- Sent 1: Energy is the ability to do work.
Sent 2: Another way to say this is, the ability to cause change.
Sent 3: Work is done when a force is used to move something.
Sent 4: When work is done, energy is transferred.
Sent 5: This transfer occurs between one object and another.
Sent 6: For example, a batter swings a bat and transfers energy.
Sent 7: She transfers her energy to the bat.
Sent 8: The moving bat, in turn, transfers energy to the ball.
Sent 9: Energy is measured in the Joule (J).
Sent 10: Energy exists in many forms.
Sent 11: One form of energy is called mechanical.
Sent 12: Mechanical energy is the energy of motion.
Sent 13: This type of energy can also include things that are not yet in motion.
Sent 14: In these cases, they have only a potential to be in motion.
Sent 15: In most cases, this ability comes from a position.
Sent 16: A rock sitting on top of a cliff has potential energy.
Sent 17: It is more than just the ability.
Sent 18: A rock sitting on the ground could move if someone picked it up.
Question: Describe potential energy and give an example.
Example Output: 13, 14, 15, 16.

Example Input: Paragraph- Sent 1: ROME, Italy (CNN) -- A U.N. report says hunger is on the rise globally and blames higher food prices.
Sent 2: Populations within conflict zones such as the Democratic Republic of Congo are particularly vulnerable.
Sent 3: The Food and Agriculture Organization has issued preliminary estimates classifying 963 million people as undernourished -- an increase of 40 million people over the past year.
Sent 4: "One out of seven people -- about 15 percent -- suffer chronically of not having enough to eat," said Mark Smulders, an FAO economist.
Sent 5: The hunger report -- titled "The State of Food Insecurity in the World 2008" -- said the world's financial and economic problems could throw more people into poverty.
Sent 6: The number of hungry had been increasing over the years before the rise in food prices, with warfare and political instability continuing to be among the factors causing poverty.
Sent 7: The preliminary estimates lack a firm country breakdown, but last year's figures are an accurate measure of where the problems are.
Sent 8: About 907 out of 923 million undernourished people in 2007, or 65 percent of the hungry, live in India, China, the war-wracked Democratic Republic of Congo, Bangladesh, Indonesia, Pakistan and Ethiopia.
Sent 9: Smulders said about 27 percent of the world's hungry live in India and 15 percent in China.
Sent 10: The other countries each represent 4 to 5 percent of the world's total.
Sent 11: There has been progress in fighting hunger in the Asian nations of Thailand and Vietnam, and in the sub-Saharan African nations of Ghana, Republic of Congo, Nigeria, Mozambique and Malawi, the report said.
Question: What is the main issue of poverty?.
Example Output:
4, 5, 6.