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: But I think it is certain that most of the early Christians understood these words of our Lord's ascension and coming again in glory.
Sent 2: They believed that He was coming again in a very little while during their own life-time, in a few months or years, to make an end of the world and to judge the quick and the dead.
Sent 3: And as they waited for His coming, one generation after another, and yet He did not come, a sadness fell upon them.
Sent 4: Christ seemed to have left the world.
Sent 5: The little while that He had promised to be away seemed to have become a very long while.
Sent 6: Hundreds of years passed, and yet Christ did not come in glory.
Sent 7: And, as I said, a sadness fell on all the Church.
Sent 8: Surely, they said, this is the time of which Christ said we were to weep and lament till we saw Him again--this is the time of which He said that the bridegroom should be taken from us, and we should fast in those days.
Sent 9: And they did fast, and weep, and lament; and their religion became a very sad and melancholy one--most sad in those who were most holy, and loved their Lord best, and longed most for His coming in glory.
Question: How many years had passed?.
5, 6.

Paragraph- Sent 1: The old vaulted church was stripped down: there was no cloth on the altar, just a DJ's toolkit and his beer.
Sent 2: Through the dark, I could see three bolts left in the wall from where they'd taken down the crucifix.
Sent 3: A confessional too beaten-up to have been sold was shaking in a way that suggested activity inside, and where the pews had been taken out, a couple hundred people were testifying to the DJ's moving sermon.
Sent 4: Rachel stepped forward into the crowd while I took a moment to drink in the ceiling's blue-lit, shadowed vault and the light-catching haze from who-knows-what rising between the DJ and the crowd.
Sent 5: There was a terrific echo, each beat reverberating inside of the next, and the old stained-glass windows rattled in their frames.
Sent 6: On the dance floor, people moved with their eyes closed and their hands in the air.
Sent 7: I danced with Rachel for a while, but then something by the bar seemed to be pulling her eyes.
Sent 8: She told me that she was heading for a drink and slipped out of the crowd.
Sent 9: When she hadn't come back halfway through the next song, I glanced over at the bar.
Sent 10: It was just a little set-up where someone had stacked a few crates and brought something alcoholic to share, mostly beer.
Sent 11: Rachel was standing with a plastic cup, looking like she was having a conversation, but I couldn't see anyone else there.
Sent 12: The next time the crowd split, I saw him.
Sent 13: He stood in front of a blue light, so I couldn't see him clearly, but what I saw was memorable.
Sent 14: He wore a jacket of what might have been blue velvet, and his hair gleamed black against his white skin.
Sent 15: The blue haze seemed to stop just shy of his pallor, setting off his striking face without illuminating its details, and his wrists flashed white in the darkness.
Sent 16: He didn't move, just stared and held his drink.
Sent 17: The next time I saw them, his mouth was moving.
Sent 18: She nodded and he took her arm.
Sent 19: I watched them through the crush of dancers as they squeezed along the wall, and the feeling came to me that something was very wrong.
Sent 20: Saturday morning, I woke up and saw that she still hadn't come home.
Question: What was left when the crucifix was taken down from the wall at the old vaulted church?.
1, 2.

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: What contained a very complicated problems that affected the economic, social, and political future of Russia?.
6, 7, 8.