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: Not until 1998 did al Qaeda undertake a major terrorist operation of its own, in large part because Bin Ladin lost his base in Sudan.
Sent 2: Ever since the Islamist regime came to power in Khartoum, the United States and other Western governments had pressed it to stop providing a haven for terrorist organizations.
Sent 3: Other governments in the region, such as those of Egypt, Syria, Jordan, and even Libya, which were targets of some of these groups, added their own pressure.
Sent 4: At the same time, the Sudanese regime began to change.
Sent 5: Though Turabi had been its inspirational leader, General Omar al Bashir, president since 1989, had never been entirely under his thumb.
Sent 6: Thus as outside pressures mounted, Bashir's supporters began to displace those of Turabi.
Sent 7: The attempted assassination in Ethiopia of Egyptian President Hosni Mubarak in June 1995 appears to have been a tipping point.
Sent 8: The would-be killers, who came from the Egyptian Islamic Group, had been sheltered in Sudan and helped by Bin Ladin.
Sent 9: When the Sudanese refused to hand over three individuals identified as involved in the assassination plot, the UN Security Council passed a resolution criticizing their inaction and eventually sanctioned Khartoum in April 1996.
Sent 10: A clear signal to Bin Ladin that his days in Sudan were numbered came when the government advised him that it intended to yield to Libya's demands to stop giving sanctuary to its enemies.
Sent 11: Bin Ladin had to tell the Libyans who had been part of his Islamic army that he could no longer protect them and that they had to leave the country.
Sent 12: Outraged, several Libyan members of al Qaeda and the Islamic Army Shura renounced all connections with him.
Sent 13: Bin Ladin also began to have serious money problems.
Sent 14: International pressure on Sudan, together with strains in the world economy, hurt Sudan's currency.
Sent 15: Some of Bin Ladin's companies ran short of funds.
Sent 16: As Sudanese authorities became less obliging, normal costs of doing business increased.
Sent 17: Saudi pressures on the Bin Ladin family also probably took some toll.
Sent 18: In any case, Bin Ladin found it necessary both to cut back his spending and to control his outlays more closely.
Question: What was the assassination of President Hosni Mubarak a tipping point for?.
4, 5, 6, 7.

Paragraph- Sent 1: Force is a vector.
Sent 2: What then is a vector?
Sent 3: Think about how you would give directions to a friend.
Sent 4: You would not say, just walk half a mile.
Sent 5: The person may walk a half mile in the wrong direction!
Sent 6: More information is needed.
Sent 7: You may say, follow this particular road for a half mile.
Sent 8: You may say, look for the green house on Sumter St. In both examples, you provided a direction.
Sent 9: You also gave the distance.
Sent 10: In other words, you provided a vector.
Sent 11: You did not just give a distance.
Sent 12: Both pieces of information are needed to find a location.
Sent 13: This is just like describing forces.
Sent 14: To explain forces, both size and direction are needed.
Sent 15: Notice the girl in Figure 1.1.
Sent 16: She is pushing the swing away from herself.
Sent 17: Thats the direction of the force.
Sent 18: She can give the swing a strong push or a weak push.
Question: When you say, "Follow this particular road for a half mile," what kind of information are you providing in addition to distance?.
7, 8.

Paragraph- Sent 1: After the 1998 embassy bombings, the U.S. government tried to develop a clearer picture of Bin Ladin's finances.
Sent 2: A U.S. interagency group traveled to Saudi Arabia twice, in 1999 and 2000, to get information from the Saudis about their understanding of those finances.
Sent 3: The group eventually concluded that the oft-repeated assertion that Bin Ladin was funding al Qaeda from his personal fortune was in fact not true.
Sent 4: The officials developed a new theory: al Qaeda was getting its money elsewhere, and the United States needed to focus on other sources of funding, such as charities, wealthy donors, and financial facilitators.
Sent 5: Ultimately, although the intelligence community devoted more resources to the issue and produced somewhat more intelligence, it remained difficult to distinguish al Qaeda's financial transactions among the vast sums moving in the international financial system.
Sent 6: The CIA was not able to find or disrupt al Qaeda's money flows.
Sent 7: The NSC staff thought that one possible solution to these weaknesses in the intelligence community was to create an all-source terrorist-financing intelligence analysis center.
Sent 8: Clarke pushed for the funding of such a center at Treasury, but neither Treasury nor the CIA was willing to commit the resources.
Sent 9: Within the United States, various FBI field offices gathered intelligence on organizations suspected of raising funds for al Qaeda or other terrorist groups.
Sent 10: By 9/11, FBI agents understood that there were extremist organizations operating within the United States supporting a global jihadist movement and with substantial connections to al Qaeda.
Sent 11: The FBI operated a web of informants, conducted electronic surveillance, and had opened significant investigations in a number of field offices, including New York, Chicago, Detroit, San Diego, and Minneapolis.
Sent 12: On a national level, however, the FBI never used the information to gain a systematic or strategic understanding of the nature and extent of al Qaeda fundraising.
Sent 13: Treasury regulators, as well as U.S. financial institutions, were generally focused on finding and deterring or disrupting the vast flows of U.S. currency generated by drug trafficking and high-level international fraud.
Sent 14: Large-scale scandals, such as the use of the Bank of New York by Russian money launderers to move millions of dollars out of Russia, captured the attention of the Department of the Treasury and of Congress.
Sent 15: Before 9/11, Treasury did not consider terrorist financing important enough to mention in its national strategy for money laundering.
Question: WHAT OTHER SOURCES DID THE UNITED STATES FOCUS ON FOR OTHER SOUCES OF FUNDING?.
4.