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 (", ").

Input: Consider Input: Paragraph- Sent 1: The tree that the chipmunks Alvin , Simon , and Theodore live in is cut down and driven to Los Angeles .
Sent 2: Once in L.A. , the Chipmunks meet struggling songwriter David Seville ( ( ( Jason Lee who had his latest song rejected by JETT Records executive Ian Hawke , his old college roommate .
Sent 3: Dave also once had a relationship with his next door neighbor , Claire Wilson .
Sent 4: Dave also a former boss , Gail .
Sent 5: After winding up at Dave 's interview , the Chipmunks hop into his basket and follow him home .
Sent 6: Once at home , Dave discovers the Chipmunks , and is accidentally knocked unconscious .
Sent 7: Upon waking , he kicks them out until hearing them sing '' Only You '' .
Sent 8: Dave then makes a deal with them ; they sing the songs he writes , and in exchange he provides food and shelter for them .
Sent 9: However , all does not go well , as Dave 's job presentation is ruined by their coloring on it , and when Alvin tries to set the mood for his dinner with Claire , things become weird and she rejects him after he tells her , '' My life is being sabotaged by talking chipmunks . ''
Sent 10: To make it up to Dave , the boys go to Ian in an attempt to record a song and get a record deal .
Sent 11: Once the Chipmunks sing Dave 's song to Ian , Ian signs them to the label and rehires Dave the next day .
Sent 12: After a few singles , the Chipmunks become wildly popular .
Sent 13: When Dave expresses concern for their well-being and insists that the Chipmunks are '' kids '' who do n't need so much craziness in their lives , Ian convinces the Chipmunks that Dave is holding them back .
Question: Who do the Chipmunks meet in Los Angeles?.

Output: 1, 2.

Input: Consider Input: Paragraph- Sent 1: Many plants and animal species have lived on Earth.
Sent 2: Most are no longer alive.
Sent 3: Only a tiny number of species still live on Earth.
Sent 4: If not for fossils, we would know little about species that did not survive.
Sent 5: Fossils provide evidence.
Sent 6: They give us clues to past life on Earth.
Sent 7: They tell us that life on Earth has changed over time.
Sent 8: Fossils in younger rock Fossils can also tell us about how plants and animals lived in the past.
Sent 9: Was it land or marine?
Sent 10: Was the water shallow or deep?
Sent 11: Fossils can even provide clues to ancient climates.
Sent 12: They can tell us if it was warm or cold.
Sent 13: Maybe it was cold or hot?
Sent 14: Some places that are now cold were once warm.
Sent 15: Some places that are now hot and dry were once wet and cool.
Sent 16: Fossils provide a window into the past.
Question: What purpose did fossils provide?.

Output: 4, 5.

Input: Consider Input: Paragraph- Sent 1: After the last assassination attempt in February 1880, Count Loris-Melikov was appointed the head of the Supreme Executive Commission and given extraordinary powers to fight the revolutionaries.
Sent 2: Loris-Melikov's proposals called for some form of parliamentary body, and the Emperor seemed to agree; these plans were never realised.
Sent 3: On 13 March (1 March Old Style Date), 1881, Alexander fell victim to an assassination plot in Saint Petersburg.
Sent 4: As he was known to do every Sunday for many years, the emperor went to the Mikhailovsky Manege for the military roll call.
Sent 5: He travelled both to and from the Manege in a closed carriage accompanied by five Cossacks and Frank (Franciszek) Joseph Jackowski, a Polish noble, with a sixth Cossack sitting on the coachman's left.
Sent 6: The emperor's carriage was followed by two sleighs carrying, among others, the chief of police and the chief of the emperor's guards.
Sent 7: The route, as always, was via the Catherine Canal and over the Pevchesky Bridge.
Sent 8: The street was flanked by narrow pavements for the public.
Sent 9: A young member of the Narodnaya Volya ("People's Will") movement, Nikolai Rysakov, was carrying a small white package wrapped in a handkerchief.
Question: Why Alexander would travel via Pevchesky Bridge?.
Output: 4, 7.