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 (", ").

Input: Consider Input: Paragraph- Sent 1: The Agencies Confer When they learned a second plane had struck the World Trade Center, nearly everyone in the White House told us, they immediately knew it was not an accident.
Sent 2: The Secret Service initiated a number of security enhancements around the White House complex.
Sent 3: The officials who issued these orders did not know that there were additional hijacked aircraft, or that one such aircraft was en route to Washington.
Sent 4: These measures were precautionary steps taken because of the strikes in New York.
Sent 5: The FAA and White House Teleconferences.
Sent 6: The FAA, the White House, and the Defense Department each initiated a multiagency teleconference before 9:30.
Sent 7: Because none of these teleconferences-at least before 10:00- included the right officials from both the FAA and Defense Department, none succeeded in meaningfully coordinating the military and FAA response to the hijackings.
Sent 8: At about 9:20, security personnel at FAA headquarters set up a hijacking teleconference with several agencies, including the Defense Department.
Sent 9: The NMCC officer who participated told us that the call was monitored only periodically because the information was sporadic, it was of little value, and there were other important tasks.
Sent 10: The FAA manager of the teleconference also remembered that the military participated only briefly before the Pentagon was hit.
Sent 11: Both individuals agreed that the teleconference played no role in coordinating a response to the attacks of 9/11.
Sent 12: Acting Deputy Administrator Belger was frustrated to learn later in the morning that the military had not been on the call.
Sent 13: At the White House, the video teleconference was conducted from the Situation Room by Richard Clarke, a special assistant to the president long involved in counterterrorism.
Sent 14: Logs indicate that it began at 9:25 and included the CIA; the FBI; the departments of State, Justice, and Defense; the FAA; and the White House shelter.
Sent 15: The FAA and CIA joined at 9:40.
Sent 16: The first topic addressed in the White House video teleconference-at about 9:40-was the physical security of the President, the White House, and federal agencies.
Sent 17: Immediately thereafter it was reported that a plane had hit the Pentagon.
Sent 18: We found no evidence that video teleconference participants had any prior information that American 77 had been hijacked and was heading directly toward Washington.
Question: When did the FAA and the CIA join the video teleconference?.

Output: 13, 14, 15.

Input: Consider Input: Paragraph- Sent 1: (CNN) -- Australian golfer Adam Scott took the first-round lead at the British Open after carding a spectacular six-under-par 64 on Thursday, narrowly missing out on making history.
Sent 2: The world No. 13 looked set to card the first 62 in a major championship after eight birdies in his first 17 holes but a bogey at the last meant he had to settle for the lowest opening round in an Open championship at Royal Lytham & St. Annes and matching the overall course record.
Sent 3: The 31-year-old finished the day one shot ahead of Scotland's 1999 British Open champion Paul Lawrie, in-form 2007 Masters winner Zach Johnson -- who won on his last PGA Tour start to earn a place in the field -- and Belgium's Nicholas Colsaerts.
Sent 4: Why U.S. golf has a healthy future Three time British Open champion Tiger Woods finished three shots behind Scott, tied for fifth, after a mixed opening round in his bid to win his first major since 2008.
Sent 5: The 14-time major winner was joined on three under by 2002 British Open champion Ernie Els, former U.S. Open winners Rory McIlroy and Graeme McDowell plus reigning Masters champion Bubba Watson.
Sent 6: British Open leaderboard The buildup to the tournament was dominated by talk of the playing conditions, as Woods described the course as "almost unplayable" after his first practice round due to its thick rough.
Sent 7: However, after several days of strong wind and heavy rain, benign conditions allowed the players to attack the English links course.
Sent 8: "It was like a walk in the park today, and not like what we've been experiencing in the practice rounds," Scott told the official website.
Sent 9: "I'm sure there's going to be some weather elements thrown at us the next three days so I'm just going to have to knuckle down and handle that.".
Question: What are the playing conditions like on the course?.

Output: 6, 7, 8, 9.

Input: Consider Input: Paragraph- Sent 1: Walking didn't build up much heat; it just moved the air enough to chill me more.
Sent 2: After I'd walked about a block, a car rolled up behind me.
Sent 3: It slowed down as it neared me and I started to worry.
Sent 4: This wasn't the best of neighborhoods.
Sent 5: I kept my eyes straight ahead and tried to walk more quickly without showing it.
Sent 6: I heard an automatic window roll down.
Sent 7: "Hey," said a male voice, "do you need some help?" I turned around.
Sent 8: The man looked over forty, and he was driving a car I'd be afraid to drive on this street.
Sent 9: "It's a long way to anywhere worth going," he said.
Sent 10: "Would you like some help?" "Ah, I think I'm fine, thanks," I told him, and turned back to the sidewalk.
Sent 11: "Really, I'd like to help.
Sent 12: Please, hop in.
Sent 13: You don't look dressed for this weather." I glanced back over my shoulder.
Sent 14: "No thanks, sir!
Sent 15: I'm just fine.
Sent 16: Really, don't worry about me." "Nathan Spencer, I offer you help.
Sent 17: I advise that you not refuse me a third time." I stopped and looked back at him, surprised.
Sent 18: He met my eyes coolly.
Sent 19: "How do you know my name?" "I know your family.
Sent 20: Get in.
Question: Why does the man in the car ask if the main character needs help?.
Output: 1, 4, 7, 9.