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: According to the radar reconstruction, American 77 reemerged as a primary target on Indianapolis Center radar scopes at 9:05, east of its last known position.
Sent 2: The target remained in Indianapolis Center's airspace for another six minutes, then crossed into the western portion of Washington Center's airspace at 9:10.
Sent 3: As Indianapolis Center continued searching for the aircraft, two managers and the controller responsible for American 77 looked to the west and southwest along the flight's projected path, not east-where the aircraft was now heading.
Sent 4: Managers did not instruct other controllers at Indianapolis Center to turn on their primary radar coverage to join in the search for American 77.
Sent 5: In sum, Indianapolis Center never saw Flight 77 turn around.
Sent 6: By the time it reappeared in primary radar coverage, controllers had either stopped looking for the aircraft because they thought it had crashed or were looking toward the west.
Sent 7: Although the Command Center learned Flight 77 was missing, neither it nor FAA headquarters issued an all points bulletin to surrounding centers to search for primary radar targets.
Sent 8: American 77 traveled undetected for 36 minutes on a course heading due east for Washington, D.C. By 9:25, FAA's Herndon Command Center and FAA headquarters knew two aircraft had crashed into the World Trade Center.
Sent 9: They knew American 77 was lost.
Sent 10: At least some FAA officials in Boston Center and the New England Region knew that a hijacker on board American 11 had said "we have some planes."Sent 11: Concerns over the safety of other aircraft began to mount.
Sent 12: A manager at the Herndon Command Center asked FAA headquarters if they wanted to order a "nationwide ground stop."Sent 13: While this was being discussed by executives at FAA headquarters, the Command Center ordered one at 9:25.
Sent 14: The Command Center kept looking for American 77.
Sent 15: At 9:21, it advised the Dulles terminal control facility, and Dulles urged its controllers to look for primary targets.
Sent 16: At 9:32, they found one.
Sent 17: Several of the Dulles controllers "observed a primary radar target tracking eastbound at a high rate of speed" and notified Reagan National Airport.
Sent 18: FAA personnel at both Reagan National and Dulles airports notified the Secret Service.
Question: Who notified the secret service.
17.

Paragraph- Sent 1: When Alexander destroyed Tyre, most of the towns on the route to Egypt quickly capitulated.
Sent 2: A later tradition recorded his entry into Jerusalem: according to Josephus, Alexander was shown the Book of Daniel's prophecy, presumably chapter 8, which described a mighty Greek king who would conquer the Persian Empire.
Sent 3: He spared Jerusalem and pushed south into Egypt.
Sent 4: However, Alexander met with resistance at Gaza.
Sent 5: The stronghold was heavily fortified and built on a hill, requiring a siege.
Sent 6: When "his engineers pointed out to him that because of the height of the mound it would be impossible... this encouraged Alexander all the more to make the attempt".
Sent 7: After three unsuccessful assaults, the stronghold fell, but not before Alexander had received a serious shoulder wound.
Sent 8: As in Tyre, men of military age were put to the sword and the women and children were sold into slavery.
Sent 9: Alexander advanced on Egypt in later 332 BC, where he was regarded as a liberator.
Sent 10: He was pronounced son of the deity Amun at the Oracle of Siwa Oasis in the Libyan desert.
Sent 11: Henceforth, Alexander often referred to Zeus-Ammon as his true father, and after his death, currency depicted him adorned with rams horn as a symbol of his divinity.
Sent 12: During his stay in Egypt, he founded Alexandria-by-Egypt, which would become the prosperous capital of the Ptolemaic Kingdom after his death.
Question: Which did he attack first? Tyre or Egypt?.
1, 3.

Paragraph- Sent 1: The Bush administration in its first months faced many problems other than terrorism.
Sent 2: They included the collapse of the Middle East peace process and, in April, a crisis over a U.S." spy plane" brought down in Chinese territory.
Sent 3: The new administration also focused heavily on Russia, a new nuclear strategy that allowed missile defenses, Europe, Mexico, and the Persian Gulf.
Sent 4: In the spring, reporting on terrorism surged dramatically.
Sent 5: In chapter 8, we will explore this reporting and the ways agencies responded.
Sent 6: These increasingly alarming reports, briefed to the President and top officials, became part of the context in which the new administration weighed its options for policy on al Qaeda.
Sent 7: Except for a few reports that the CSG considered and apparently judged to be unreliable, none of these pointed specifically to possible al Qaeda action inside the United States-although the CSG continued to be concerned about the domestic threat.
Sent 8: The mosaic of threat intelligence came from the Counterterrorist Center, which collected only abroad.
Sent 9: Its reports were not supplemented by reports from the FBI.
Sent 10: Clarke had expressed concern about an al Qaeda presence in the United States, and he worried about an attack on the White House by "Hizbollah, Hamas, al Qida and other terrorist organizations."Sent 11: In May, President Bush announced that Vice President Cheney would himself lead an effort looking at preparations for managing a possible attack by weapons of mass destruction and at more general problems of national preparedness.
Sent 12: The next few months were mainly spent organizing the effort and bringing an admiral from the Sixth Fleet back to Washington to manage it.
Sent 13: The Vice President's task force was just getting under way when the 9/11 attack occurred.
Question: What were some of the worries concerning al Qaeda ?.
10, 11.