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: Miguel and his mother suffer a car accident ; Miguel s mother dies , but the boy miraculously survives without any injuries .
Sent 2: Given that his father died before he was born , he goes on to live with his grandmother in Sintra .
Sent 3: There he is reunited with Carlos , his best childhood friend .
Sent 4: Miguel asks for a transfer to the local university in Sintra and pursues a degree in History .
Sent 5: On the first day of lectures , before entering the Medieval History classroom , Miguel watches someone approach .
Sent 6: A girl walks in his direction , and as she enters their eyes immediately meet .
Sent 7: Her name is Sofia .
Sent 8: Miguel and Sofia immediately feel an explosive and overwhelming attraction .
Sent 9: The presence of Sofia will also awaken unknown abilities in Miguel , both physically and mentally .
Sent 10: Though Miguel and Sofia do not know it , their destinies are connected .
Sent 11: Sofia is a vampire that belongs to the family of Hector , L dia , and the provocative Valentina .
Sent 12: Sofia is not a mere vampire ; she is the next step in vampiric evolution , because she is immune to sunlight .
Sent 13: Therefore she is protected by Hector and L dia , envied by Valentina and coveted by Hector 's creator , the deadly Victor .
Sent 14: Like Sofia , Miguel is not a mere human .
Sent 15: The first episode suggests that he may be the son of the vampire Charles , which makes him a dhampir and , consequently , gives him powers against the vampires .
Sent 16: This is explained by the fact that damphyrs inherit the powers of vampires , but none of their weaknesses .
Question: How does Miguel come in contact with Carlos?.

Output: 1, 2, 3.

Input: Consider Input: Paragraph- Sent 1: (CNN) -- The body of a tourist was found off the coast of Thailand Tuesday, but six others remain missing after a ferry sank over the weekend near a popular diving destination, authorities said.
Sent 2: Survivors of the ferry sinking disembark the Thai police boat that rescued them.
Sent 3: The body is believed to be that of Austrian tourist Gabrielle Jetzinger, the Phuket Disaster Prevention and Mitigation Office told the Thai News Agency.
Sent 4: A Thai naval helicopter spotted the body floating face down about 12 nautical miles from Phuket's Promthep cape, and a Thai navy patrol retrieved the floating corpse.
Sent 5: The body has been sent to a government hospital for an autopsy, the agency reported.
Sent 6: Authorities are still searching for the five tourists and one crew member who remain missing.
Sent 7: They are thought to be German, Austrian, Japanese, Swiss and one Thai crew member, the news agency said.
Sent 8: The tourist boat, the Choke Somboon 19, was taking passengers from the Similan Islands to Phuket -- an area popular with tourists from around the world.
Sent 9: It capsized during a heavy storm Sunday night, said Lt. Sattawat Srirattanapong with the Phuket City police.
Sent 10: Survivors included 15 international tourists and eight Thais, who were picked up by a rescue boat Monday morning.
Sent 11: Phuket and the Similan Islands are famous for their diving spots, attracting international tourists each year from November to May.
Question: how was the survivors saved ?.

Output: 2, 3.

Input: Consider Input: Paragraph- Sent 1: Feel the top of your desk.
Sent 2: Does it look and feel smooth?
Sent 3: Yes, it feels and looks smooth, but is it really?
Sent 4: Even when surfaces look smooth to the unaided eye, they may not be.
Sent 5: Scientists use a microscope to look at things more closely.
Sent 6: Through a microscope, smooth surfaces may appear rough or bumpy.
Sent 7: Look at the metal surfaces in Figure 1.8.
Sent 8: The metal foil is so smooth that it is shiny.
Sent 9: However, when highly magnified, it is clearly not smooth.
Sent 10: It actually looks to be very bumpy.
Sent 11: All those bumps grab the bumps of other surfaces.
Sent 12: They grind together.
Sent 13: They oppose the motion of the two surfaces.
Sent 14: Now you know what causes friction.
Question: To whom do surfaces appear rough and bumpy when viewed under a microscope?.
Output: 5, 6.