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 Input:
Paragraph- Sent 1: Einstein visited New York City for the first time on 2 April 1921, where he received an official welcome by Mayor John Francis Hylan, followed by three weeks of lectures and receptions.
Sent 2: He went on to deliver several lectures at Columbia University and Princeton University, and in Washington he accompanied representatives of the National Academy of Science on a visit to the White House.
Sent 3: On his return to Europe he was the guest of the British statesman and philosopher Viscount Haldane in London, where he met several renowned scientific, intellectual and political figures, and delivered a lecture at King's College.
Sent 4: He also published an essay, "My First Impression of the U.S.A.," in July 1921, in which he tried briefly to describe some characteristics of Americans, much as Alexis de Tocqueville did, who published his own impressions in Democracy in America (1835).
Sent 5: For some of his observations, Einstein was clearly surprised: "What strikes a visitor is the joyous, positive attitude to life .
Sent 6: The American is friendly, self-confident, optimistic, and without envy."Sent 7: In 1922, his travels took him to Asia and later to Palestine, as part of a six-month excursion and speaking tour, as he visited Singapore, Ceylon and Japan, where he gave a series of lectures to thousands of Japanese.
Sent 8: After his first public lecture, he met the emperor and empress at the Imperial Palace, where thousands came to watch.
Sent 9: In a letter to his sons, Einstein described his impression of the Japanese as being modest, intelligent, considerate, and having a true feel for art.
Sent 10: On his return voyage, he visited Palestine for 12 days in what would become his only visit to that region.
Sent 11: Einstein was greeted as if he were a head of state, rather than a physicist, which included a cannon salute upon arriving at the home of the British high commissioner, Sir Herbert Samuel.
Sent 12: During one reception, the building was stormed by people who wanted to see and hear him.
Sent 13: In Einstein's talk to the audience, he expressed happiness that the Jewish people were beginning to be recognized as a force in the world.
Question: Who described Americans as "friendly, self-confident, optimistic, and without envy" in his/her essay "My First Impression of the U.S.A."?.

Ex Output:
1, 4, 6.

Ex Input:
Paragraph- Sent 1: The one person who, by his interference, could have settled all doubts was debarred by circumstances from interfering in the matter.
Sent 2: Wykham Delandre had quarrelled with his sister--or perhaps it was that she had quarrelled with him--and they were on terms not merely of armed neutrality but of bitter hatred.
Sent 3: The quarrel had been antecedent to Margaret going to Brent's Rock.
Sent 4: She and Wykham had almost come to blows.
Sent 5: There had certainly been threats on one side and on the other; and in the end Wykham, overcome with passion, had ordered his sister to leave his house.
Sent 6: She had risen straightway, and, without waiting to pack up even her own personal belongings, had walked out of the house.
Sent 7: On the threshold she had paused for a moment to hurl a bitter threat at Wykham that he would rue in shame and despair to the last hour of his life his act of that day.
Sent 8: Some weeks had since passed; and it was understood in the neighbourhood that Margaret had gone to London, when she suddenly appeared driving out with Geoffrey Brent, and the entire neighbourhood knew before nightfall that she had taken up her abode at the Rock.
Sent 9: It was no subject of surprise that Brent had come back unexpectedly, for such was his usual custom.
Sent 10: Even his own servants never knew when to expect him, for there was a private door, of which he alone had the key, by which he sometimes entered without anyone in the house being aware of his coming.
Sent 11: This was his usual method of appearing after a long absence.
Question: Did Margaret hurl a bitter threat at Wykham before or after being ordered to leave the house?.

Ex Output:
5, 7.

Ex Input:
Paragraph- Sent 1: Littlefoot 's grandfather one night tells the children a story about '' The Lone Dinosaur '' , a legendary longneck who once protected the Great Valley from the most ferocious sharptooth ever to live .
Sent 2: A fight ensued , which led to the Sharptooth 's death .
Sent 3: However , the sharptooth left '' The Lone Dinosaur '' with a scar slashed across his right eye .
Sent 4: Soon after the battle , a huge monolith that resembled a proud sauropod , having life-sized Sharptooth teeth arranged around his neck , came out of the ground during an earthquake .
Sent 5: The dinosaurs called it '' Saurus Rock '' .
Sent 6: The legend also states that if anyone damages the monolith , bad luck would descend upon the valley .
Sent 7: A few days later when the kids are playing , Littlefoot accidentally falls off a cliff .
Sent 8: Just before he hits the ground , a gruff Diplodocus rescues him .
Sent 9: This longneck introduces himself only as '' Doc '' and gives no knowledge of his history .
Sent 10: Littlefoot is intrigued by this newcomer , who is scarred across one eye and displays prior knowledge of the Great Valley 's topography .
Sent 11: For the preceding reasons , Littlefoot assumes that Doc is the Lone Dinosaur .
Sent 12: He tells his friends this , narrating an apparently extemporaneous legend to support his assumption .
Sent 13: Inspired , Cera 's infant nieces , the twins Dinah and Dana , go to Saurus Rock without anyone noticing .
Sent 14: Later when the friends are playing , they notice that Dinah and Dana are missing .
Sent 15: Recalling their talk of the day before , they go to Saurus Rock to find them .
Question: Who was the hero of littlefoot's grandfather?.

Ex Output:
1, 2, 11, 14.