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 (", ").

[Q]: Paragraph- Sent 1: Soon after the conclusion of peace, important changes were made in legislation concerning industry and commerce, and the new freedom thus afforded produced a large number of limited liability companies.
Sent 2: Plans were formed for building a great network of railways, partly for the purpose of developing the natural resources of the country, and partly for the purpose of increasing its power for defense and attack.
Sent 3: The existence of serfdom was tackled boldly, taking advantage of a petition presented by the Polish landed proprietors of the Lithuanian provinces and, hoping that their relations with the serfs might be regulated in a more satisfactory way (meaning in a way more satisfactory for the proprietors), he authorized the formation of committees "for ameliorating the condition of the peasants," and laid down the principles on which the amelioration was to be effected.
Sent 4: This step had been followed by one even more significant.
Sent 5: Without consulting his ordinary advisers, Alexander ordered the Minister of the Interior to send a circular to the provincial governors of European Russia (serfdom was rare in other parts), containing a copy of the instructions forwarded to the Governor-General of Lithuania, praising the supposed generous, patriotic intentions of the Lithuanian landed proprietors, and suggesting that perhaps the landed proprietors of other provinces might express a similar desire.
Sent 6: The hint was taken: in all provinces where serfdom existed, emancipation committees were formed.
Sent 7: The emancipation was not merely a humanitarian question capable of being solved instantaneously by imperial ukase.
Sent 8: It contained very complicated problems, deeply affecting the economic, social and political future of the nation.
Sent 9: Alexander had to choose between the different measures recommended to him and decide if the serfs would become agricultural laborers dependent economically and administratively on the landlords or if the serfs would be transformed into a class of independent communal proprietors.
Sent 10: The emperor gave his support to the latter project, and the Russian peasantry became one of the last groups of peasants in Europe to shake off serfdom.
Sent 11: The architects of the emancipation manifesto were Alexander's brother Konstantin, Yakov Rostovtsev, and Nikolay Milyutin.
Sent 12: On 3 March 1861, 6 years after his accession, the emancipation law was signed and published.
Question: When were plans formed for building a great network of railways?.
[A]: 1, 2.

[Q]: Paragraph- Sent 1: Military Notification and Response.
Sent 2: Boston Center did not follow the protocol in seeking military assistance through the prescribed chain of command.
Sent 3: In addition to notifications within the FAA, Boston Center took the initiative, at 8:34, to contact the military through the FAA's Cape Cod facility.
Sent 4: The center also tried to contact a former alert site in Atlantic City, unaware it had been phased out.
Sent 5: At 8:37:52, Boston Center reached NEADS.
Sent 6: This was the first notification received by the military-at any level-that American 11 had been hijacked: FAA: Hi.
Sent 7: Boston Center TMU [Traffic Management Unit], we have a problem here.
Sent 8: We have a hijacked aircraft headed towards New York, and we need you guys to, we need someone to scramble some F-16s or something up there, help us out.
Sent 9: NEADS: Is this real-world or exercise?
Sent 10: FAA: No, this is not an exercise, not a test.
Sent 11: NEADS ordered to battle stations the two F-15 alert aircraft at Otis Air Force Base in Falmouth, Massachusetts, 153 miles away from New York City.
Sent 12: The air defense of America began with this call.
Sent 13: At NEADS, the report of the hijacking was relayed immediately to Battle Commander Colonel Robert Marr.
Sent 14: After ordering the Otis fighters to battle stations, Colonel Marr phoned Major General Larry Arnold, commanding general of the First Air Force and NORAD's Continental Region.
Sent 15: Marr sought authorization to scramble the Otis fighters.
Sent 16: General Arnold later recalled instructing Marr to "go ahead and scramble them, and we'll get authorities later."Sent 17: General Arnold then called NORAD headquarters to report.
Sent 18: F-15 fighters were scrambled at 8:46 from Otis Air Force Base.
Question: Why did the Boston Center seek military assistance.
[A]: 3, 6, 8.

[Q]: Paragraph- Sent 1: In spring 333 BC, Alexander crossed the Taurus into Cilicia.
Sent 2: After a long pause due to illness, he marched on towards Syria.
Sent 3: Though outmanoeuvered by Darius' significantly larger army, he marched back to Cilicia, where he defeated Darius at Issos.
Sent 4: Darius fled the battle, causing his army to collapse, and left behind his wife, his two daughters, his mother Sisygambis, and a fabulous treasure.
Sent 5: He offered a peace treaty that included the lands he had already lost, and a ransom of 10,000 talents for his family.
Sent 6: Alexander replied that since he was now king of Asia, it was he alone who decided territorial divisions.
Sent 7: Alexander proceeded to take possession of Syria, and most of the coast of the Levant.
Sent 8: In the following year, 332 BC, he was forced to attack Tyre, which he captured after a long and difficult siege.
Sent 9: Alexander massacred the men of military age and sold the women and children into slavery.
Question: How did Alexander rule?.
[A]:
6, 8, 9.