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 (", ").

Example Input: Paragraph- Sent 1: Fatty plays a somewhat lazy young man who disrupts his mother 's life by causing a fire by smoking in bed , then ruins laundry day by dropping it in the mud .
Sent 2: He has two loves of his life , the girl next door Lizzie and his dog Luke .
Sent 3: After showcasing his lack of talents helping his mother , he is able to save Luke from the dog catchers and express his love for Lizzie through a hole in the fence .
Sent 4: In the second reel , Fatty , Lizzie , mom and Luke go to the amusement park , where Fatty is first outwitted by a couple of sharks but then retrieves his losses by pointing a fake gun at them .
Sent 5: To extract revenge , they kidnap Lizzie with the help of the embittered dog catchers , and take her to an abandoned shack , where they tie her to a post with a gun attached to a timer pointed at her head .
Sent 6: Plucky pup Luke follows the crooks , and is able to warn Fatty in time to perform the last-minute rescue , with the help of the Keystone Cops .
Sent 7: In the closing shot Fatty , Lizzie and Luke embrace in a joint kiss .
Question: Who gets kidnapped?.
Example Output: 5, 6.

Example Input: Paragraph- Sent 1: From Babylon, Alexander went to Susa, one of the Achaemenid capitals, and captured its legendary treasury.
Sent 2: He sent the bulk of his army to the Persian ceremonial capital of Persepolis via the Royal Road.
Sent 3: Alexander himself took selected troops on the direct route to the city.
Sent 4: He had to storm the pass of the Persian Gates (in the modern Zagros Mountains) which had been blocked by a Persian army under Ariobarzanes and then hurried to Persepolis before its garrison could loot the treasury.
Sent 5: On entering Persepolis, Alexander allowed his troops to loot the city for several days.
Sent 6: Alexander stayed in Persepolis for five months.
Sent 7: During his stay a fire broke out in the eastern palace of Xerxes and spread to the rest of the city.
Sent 8: Possible causes include a drunken accident or deliberate revenge for the burning of the Acropolis of Athens during the Second Persian War.
Question: What are the possible causes for the fire that broke out in the eastern palace of Xerxes?.
Example Output: 7, 8.

Example Input: Paragraph- Sent 1: Surely, you have noticed the tall poles along the roadside.
Sent 2: Do you know what is on top of those poles?
Sent 3: Thats right, wires that carry electric current.
Sent 4: These wires carry electric current to your home.
Sent 5: But what is electric current?
Sent 6: Electric current is actually the flow of electrons.
Sent 7: You may recall, an electron is the outer-most particle in an atom.
Sent 8: They have a negative charge.
Sent 9: Electricity is the continuous flow of these particles.
Sent 10: Electrons are able to move through wires.
Sent 11: Their speed can even be measured.
Sent 12: The SI unit for electric current (or speed) is the ampere (A).
Sent 13: Ampere is often shortened to amp.
Sent 14: Electric current may flow in just one direction, or it may keep reversing direction.
Sent 15: Direct current (DC) flows in only one direction.
Sent 16: Direct current is what is used in devices like flashlights.
Sent 17: Alternating current (AC) flows in two directions.
Sent 18: This is the type of current that flows into your home through wires.
Question: What kind of charge does an electron have?.
Example Output:
7, 8.