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 (", ").
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Question: Paragraph- Sent 1: The inhabited history of the Las Vegas Valley stretches to 23,000 b.c.
Sent 2: , when much of the area was covered by a prehistoric lake.
Sent 3: During this period, the indigenous people lived in caves, hunting the mammals that gathered at the shoreline.
Sent 4: The landscape of the valley changed dramatically over the next 200 centuries.
Sent 5: The glaciers feeding the lake melted away and the lake evaporated.
Sent 6: Fossils tell an obscure story of man's slow and sporadic development.
Sent 7: Around 3000 b.c.
Sent 8: , native Archaic Indians began to develop a lasting hunting and gathering culture.
Sent 9: By this time, the valley was in much the same geographic state as it exists in today, with one exceptionthe presence of artesian springs that bubbled to the surface in several areas.
Sent 10: These springs fed a network of streams draining through the Las Vegas Wash to the Colorado River.
Sent 11: The areas surrounding the springs were desert oases: sprawling collections of grasses, trees, and wildlife.
Sent 12: Many springs lay in areas that would eventually become the center of the modern Las Vegas metropolis.
Sent 13: For about 4000 years, the Archaics thrived in a culture that included many signs of early civilization.
Sent 14: Signs of even more advancement appeared halfway through the first millennium a.d.
Sent 15: , when the Anasazi Indians inhabited the valley.
Sent 16: Far more progressive than the Archaics, the Anasazi utilized such formal agricultural techniques as irrigation to assist their harvest.
Sent 17: This permitted the Anasazi to achieve a benchmark of advanced societythe ability to live in permanent shelters year-round without need to follow wildlife.
Sent 18: Mysteriously, the Anasazi vanished from the valley around a.d.
Question: What allowed the Anasazi to live in permanent shelters?.

Answer: 16, 17.

Question: Paragraph- Sent 1: The Mummy 's Shroud is set in 1920 and tells the story of a team of archaeologists who come across the lost tomb of the boy Pharaoh Kah-To-Bey .
Sent 2: The story begins with a flash back sequence to Ancient Egypt and we see the story of how Prem , a manservant of Kah-To-Bey , spirited away the boy when his father was killed in a palace coup and took him into the desert for protection .
Sent 3: Unfortunately , the boy dies and is buried .
Sent 4: The story then moves forward to 1920 and shows the expedition led by scientist Sir Basil Walden and business man Stanley Preston finding the tomb .
Sent 5: They ignore the dire warning issued to them by Hasmid , a local Bedouin about the consequences for those that violate the tombs of Ancient Egypt and remove the bodies and the sacred shroud .
Sent 6: Sir Basil is bitten by a snake just after finding the tomb .
Sent 7: He recovers , but has a relapse after arriving back in Cairo .
Sent 8: Preston takes advantage of this and commits him to an insane asylum , to take credit for finding the tomb and Prince 's mummy himself .
Sent 9: Meanwhile , after being placed in the Cairo Museum , the mummy of Prem is revived when Hasmid chants the sacred oath on the shroud .
Sent 10: The mummy then proceeds to go on a murderous rampage to kill off the members of the expedition , beginning with Sir Basil after he escapes from the asylum .
Sent 11: One by one , those who assisted in removing the contents of the tomb to Cairo are eliminated by such grisly means as strangulation , being thrown out of windows , and having photographic acid thrown in their face .
Question: Where the mummy was placed?.

Answer: 9.

Question: Paragraph- Sent 1: At a modern-day nursing home , an elderly man named Duke begins to read a romantic story from his notebook to a fellow patient .
Sent 2: The story he tells begins in 1940 .
Sent 3: In Seabrook Island , South Carolina , local country boy Noah Calhoun is smitten with seventeen-year-old heiress Allie Hamilton after seeing her at a carnival , and they share an idyllic summer love affair .
Sent 4: Noah takes Allie to an abandoned house , which he explains that he intends to buy for them .
Sent 5: Later that evening , she asks him to make love to her , but they are interrupted by Noah 's friend Fin ( ( ( Kevin Connolly with the news that Allie 's parents have the police out looking for her .
Sent 6: When Allie and Noah return to her parents ' mansion , they ban her from seeing Noah , whom they say is '' trash , trash , trash not for you ! ''
Sent 7: The two break up and the next morning , Allie 's mother announces that the family is returning home to Charleston .
Sent 8: Noah writes a letter each day to Allie for one year , but Allie 's mom intercepts them all and keeps them hidden from Allie .
Sent 9: As each lover sees there is no contact from the other , Noah and Allie have no choice but to move on with their lives ; Noah and Fin enlist to fight in World War II and Fin is killed in battle .
Sent 10: Allie becomes a volunteer in a hospital for wounded soldiers , where she meets an officer named Lon Hammond , Jr. , a young lawyer who is handsome , sophisticated , charming and comes from old Southern money .
Sent 11: The two eventually become engaged , to the delight of Allie 's parents , but Allie sees Noah 's face when Lon asks her to marry him .
Question: To which city does Noah send his letters?.

Answer:
7, 8.