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 (", ").

[EX Q]: Paragraph- Sent 1: Into the 21st Century: As 1997 drew nearer, it became clear that the Chinese government had no intention of renewing the 99-year lease on the New Territories.
Sent 2: Negotiations began, and in 1984 Prime Minister Margaret Thatcher signed the Sino-British Joint Declaration, in which Britain confirmed the transfer of the New Territories and all of Hong Kong to China in 1997.
Sent 3: For its part, China declared Hong Kong a "Special Administrative Region" and guaranteed its civil and social system for at least 50 years after 1997.
Sent 4: Although China's Basic Law promised that Hong Kong's existing laws and civil liberties would be upheld, refugees began flowing the other way.
Sent 5: The British Nationality Act (1981) had in effect prevented Hong Kong citizens from acquiring British citizenship, and thousands of people, anxious about their future under China's rule, were prompted to apply for citizenship elsewhere, notably in Canada and Australia.
Sent 6: The protests in 1989 in Beijing's Tiananmen Square sparked sympathy marches in Hong Kong, and further increased tension with China.
Sent 7: Some companies moved their headquarters out of Hong Kong.
Sent 8: Ironically, as the handover approached, the British granted the Hong Kong Chinese more political autonomy than they had done since the colony was founded, including such democratic reforms as elections to the Legislative Council.
Sent 9: Since the handover in July 1997, China has generally followed a hands-off policy.
Sent 10: Many who fled have returned.
Sent 11: What controls heartbeats in Hong Kong are the fluctuations of the Hang Seng Index, foreign currency exchange rates, and skyrocketing property prices.
Sent 12: In short, the status quo prevails.
Sent 13: Everybody hopes Hong Kong will remain stable, but everyone also has their doubts.
Sent 14: In the meantime, the philosophy is to seize present-day opportunities in the thriving economy.
Question: what two countries were involved in the Sino-British Joint Declaration in 1997?.
[EX A]: 1, 2.

[EX Q]: Paragraph- Sent 1: In passing through these checkpoints, each of the hijackers would have been screened by a walk-through metal detector calibrated to detect items with at least the metal content of a .22-caliber handgun.
Sent 2: Anyone who might have set off that detector would have been screened with a hand wand-a procedure requiring the screener to identify the metal item or items that caused the alarm.
Sent 3: In addition, an X-ray machine would have screened the hijackers' carry-on belongings.
Sent 4: The screening was in place to identify and confiscate weapons and other items prohibited from being carried onto a commercial flight.
Sent 5: None of the checkpoint supervisors recalled the hijackers or reported anything suspicious regarding their screening.
Sent 6: While Atta had been selected by CAPPS in Portland, three members of his hijacking team-Suqami, Wail al Shehri, and Waleed al Shehri-were selected in Boston.
Sent 7: Their selection affected only the handling of their checked bags, not their screening at the checkpoint.
Sent 8: All five men cleared the checkpoint and made their way to the gate for American 11.
Sent 9: Atta, Omari, and Suqami took their seats in business class (seats 8D, 8G, and 10B, respectively).
Sent 10: The Shehri brothers had adjacent seats in row 2 (Wail in 2A, Waleed in 2B), in the firstclass cabin.
Sent 11: They boarded American 11 between 7:31 and 7:40.
Sent 12: The aircraft pushed back from the gate at 7:40.
Sent 13: Shehhi and his team, none of whom had been selected by CAPPS, boarded United 175 between 7:23 and 7:28 (Banihammad in 2A, Shehri in 2B, Shehhi in 6C, Hamza al Ghamdi in 9C, and Ahmed al Ghamdi in 9D).
Sent 14: Their aircraft pushed back from the gate just before 8:00.
Sent 15: Washington Dulles: American 77.
Sent 16: Hundreds of miles southwest of Boston, at Dulles International Airport in the Virginia suburbs of Washington, D.C., five more men were preparing to take their early morning flight.
Sent 17: At 7:15, a pair of them, Khalid al Mihdhar and Majed Moqed, checked in at the American Airlines ticket counter for Flight 77, bound for Los Angeles.
Sent 18: Within the next 20 minutes, they would be followed by Hani Hanjour and two brothers, Nawaf al Hazmi and Salem al Hazmi.
Question: Name the two men who checked in for Flight 77 in Dulles Airport at 7:15 a.m.
[EX A]: 16, 17.

[EX Q]: Paragraph- Sent 1: The movie is a fictionalized account of the experiences of a real-life Jewish-American military officer , Colonel David '' Mickey '' Marcus , who commanded units of the fledgling Israel Defense Force during the 1948 Arab-Israeli War .
Sent 2: Marcus , a former Colonel in the Judge Advocate General Corps of the US Army , recently released from active duty and now working as a New York lawyer , is approached by the Haganah who request his assistance in preparing Israeli troops to defend the newly declared state against the invasion of its Arab neighbors .
Sent 3: Marcus , still a Army Reserve officer , is refused permission by the Pentagon to go , unless he uses an alias and travels as a civilian .
Sent 4: As '' Michael Stone '' , he arrives in Israel to be met by a Haganah member , Magda Simon , whom he immediately starts flirting with .
Sent 5: Marcus , who parachuted into occupied France during World War II ,and helped to organise the relief mission for Dachau , the first Nazi concentration camp liberated by American troops , is initially viewed with suspicion by some Haganah soldiers .
Sent 6: But after he leads a commando raid on an Arab arms dump and assists in a landing of ' illegal ' refugees , he is more accepted .
Sent 7: He prepares his training manuals and then returns to New York , where his wife has suffered a miscarriage .
Sent 8: Now restless , and despite his wife 's pleadings , he does return to Israel and is given command of the Jerusalem front with the rank of ' Aluf ' , a rank not used since biblical days .
Question: Who met him when he arrived in Israel, How was he viewed by some Haganah soldiers when he arrived and what did he do to prove his credentials?.
[EX A]:
4, 5, 6.