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: Despite the regard in which he was held by the Venetians, Durer returned to Nuremberg by mid-1507, remaining in Germany until 1520.
Sent 2: His reputation had spread throughout Europe and he was on friendly terms and in communication with most of the major artists including Raphael, Giovanni Bellini and -- mainly through Lorenzo di Credi -- Leonardo da Vinci.
Sent 3: Between 1507 and 1511 Durer worked on some of his most celebrated paintings: Adam and Eve (1507), The Martyrdom of the Ten Thousand (1508, for Frederick of Saxony), Virgin with the Iris (1508), the altarpiece Assumption of the Virgin (1509, for Jacob Heller of Frankfurt), and Adoration of the Trinity (1511, for Matthaeus Landauer).
Sent 4: During this period he also completed two woodcut series, the Great Passion and the Life of the Virgin, both published in 1511 together with a second edition of the Apocalypse series.
Sent 5: The post-Venetian woodcuts show Durer's development of chiaroscuro modelling effects, creating a mid-tone throughout the print to which the highlights and shadows can be contrasted.
Sent 6: Other works from this period include the thirty-seven woodcut subjects of the Little Passion, published first in 1511, and a set of fifteen small engravings on the same theme in 1512.
Sent 7: Indeed, complaining that painting did not make enough money to justify the time spent when compared to his prints, he produced no paintings from 1513 to 1516.
Sent 8: However, in 1513 and 1514 Durer created his three most famous engravings: Knight, Death, and the Devil (1513, probably based on Erasmus's treatise Enchiridion militis Christiani), St. Jerome in his Study, and the much-debated Melencolia I (both 1514).
Sent 9: In 1515, he created his woodcut of a Rhinoceros which had arrived in Lisbon from a written description and sketch by another artist, without ever seeing the animal himself.
Sent 10: An image of the Indian rhinoceros, the image has such force that it remains one of his best-known and was still used in some German school science text-books as late as last century.
Sent 11: In the years leading to 1520 he produced a wide range of works, including the woodblocks for the first western printed star charts in 1515 and portraits in tempera on linen in 1516.
Question: What woodcut series Durer completed between 1507 and 1511?.

A: 3, 4.
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Q: Paragraph- Sent 1: The hijackers attacked at 9:28.
Sent 2: While traveling 35,000 feet above eastern Ohio, United 93 suddenly dropped 700 feet.
Sent 3: Eleven seconds into the descent, the FAA's air traffic control center in Cleveland received the first of two radio transmissions from the aircraft.
Sent 4: During the first broadcast, the captain or first officer could be heard declaring "Mayday" amid the sounds of a physical struggle in the cockpit.
Sent 5: The second radio transmission, 35 seconds later, indicated that the fight was continuing.
Sent 6: The captain or first officer could be heard shouting:" Hey get out of here-get out of here-get out of here."Sent 7: On the morning of 9/11, there were only 37 passengers on United 93-33 in addition to the 4 hijackers.
Sent 8: This was below the norm for Tuesday mornings during the summer of 2001.
Sent 9: But there is no evidence that the hijackers manipulated passenger levels or purchased additional seats to facilitate their operation.
Sent 10: The terrorists who hijacked three other commercial flights on 9/11 operated in five-man teams.
Sent 11: They initiated their cockpit takeover within 30 minutes of takeoff.
Sent 12: On Flight 93, however, the takeover took place 46 minutes after takeoff and there were only four hijackers.
Sent 13: The operative likely intended to round out the team for this flight, Mohamed al Kahtani, had been refused entry by a suspicious immigration inspector at Florida's Orlando International Airport in August.
Sent 14: Because several passengers on United 93 described three hijackers on the plane, not four, some have wondered whether one of the hijackers had been able to use the cockpit jump seat from the outset of the flight.
Sent 15: FAA rules allow use of this seat by documented and approved individuals, usually air carrier or FAA personnel.
Sent 16: We have found no evidence indicating that one of the hijackers, or anyone else, sat there on this flight.
Sent 17: All the hijackers had assigned seats in first class, and they seem to have used them.
Sent 18: We believe it is more likely that Jarrah, the crucial pilot-trained member of their team, remained seated and inconspicuous until after the cockpit was seized; and once inside, he would not have been visible to the passengers.
Question: Where and when was the first 9/11 attack?.

A: 1, 2, 7.
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Q: Paragraph- Sent 1: I pulled out the hammer and one of the stakes.
Sent 2: He leapt over the pews, soaring like a grasshopper, and drew a gleaming knife in midair.
Sent 3: I dodged, but he tossed it, and I held the box in front of my face.
Sent 4: The blade lodged in the wood, its silver point penetrating the velvet and nearly reaching my skin.
Sent 5: My arms shook from the force of his throw.
Sent 6: Then he landed heavy beside me and I scrambled to stand.
Sent 7: His first move pulled out the dagger, almost wrenching my arms from their sockets as I held on to the box, and the second shattered the box with a crushing punch that sent me reeling backwards.
Sent 8: I dropped the splinters and the broken second stake and raised my hammer, ready to drive the ash spike into his heart.
Sent 9: Behind him, I saw Nepthys running between the pews.
Sent 10: I braced my legs against the stone floor and he was on me.
Sent 11: I raised the stake; he drew back the dagger for a slash that could doubtless open my neck from throat to spine.
Sent 12: The stake went down, there was a blur, and then my hands were empty and I felt pain under my jaw.
Sent 13: Two points of fire opened in my throat for an instant, then all went numb.
Sent 14: Taste, hearing and touch became a single blur, and I do not know if my eyes were open.
Sent 15: My mind began to dissipate, but then I felt the pain withdraw and a lifeless voice said, "This one's blood isn't worth drinking." Hands closed on my neck and I felt my spine crack.
Sent 16: I must have fallen to the floor then.
Sent 17: I could perceive Nepthys' sword flashing over me, and I heard steel crack, then bone.
Sent 18: I thought I heard Rachel's voice blearily calling for me.
Sent 19: Then one set of footsteps began walking toward the altar.
Sent 20: I was content to let myself drift away, and I had almost forgotten the body lying with broken neck on the cathedral's hard tiles when I felt a warm touch on its cheek.
Question: what was the box that the narrator held in front of his face to block the knife made of?.

A:
2, 3, 4.
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