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 (", ").

Paragraph- Sent 1: Lighting a cigarette, he started for the lake and Grace returned thoughtfully to the house.
Sent 2: Mortimer hated Cartwright and Grace admitted he had some grounds.
Sent 3: Although her brother was indolent and philosophical, he did not forget.
Sent 4: Rude disputes jarred him, but if by some chance he was able to injure the other, Grace thought he would do so.
Sent 5: Grace, herself, strongly disapproved of Cartwright.
Sent 6: All the same, he was her step-father and she had tried to cultivate her sense of duty.
Sent 7: She was prejudiced, cold, and censorious, but she meant to be just and did not like Mortimer's bitterness.
Sent 8: Cartwright was occupied for some time at Montreal, and the birch leaves had fallen when he returned.
Sent 9: The evening was dark, and chilly mist rolled down the dale, but a big fire burned in the hall at Carrock and tall lamps threw a cheerful light on the oak paneling.
Sent 10: A flooded beck roared in the hollow of a ghyll across the lawn and its turmoil echoed about the hall.
Sent 11: Mrs. Cartwright stood by the fire, Grace moved restlessly about, and Mortimer appeared to be absorbed by the morning's news.
Question: What is the name of Grace's brother?.
2, 3, 5, 6.

Paragraph- Sent 1: Porky is looking all over the big city for a hotel room , but due to a convention there are no vacancies .
Sent 2: Porky takes the only available vacancy at one hotel , but will have to share with Daffy Duck , who is a very loud , obnoxious and annoying sort .
Sent 3: Daffy introduces his invisible kangaroo friend '' Hymie '' , but Porky wo n't believe that .
Sent 4: Daffy spends the rest of the night annoying Porky : pestering him with questions , shaking the bed , spilling water from a glass , hogging the blanket and finally literally sending the both of them flying off the bed when Daffy kicks , and startles , Porky with his literally frozen feet .
Sent 5: Fed up with his antics , Porky stuffs Daffy in a pillow case and drops him out of the window .
Sent 6: As Porky goes back to bed , Daffy returns bandaged , but shakes them off and prepares to get revenge .
Sent 7: Daffy tricks the half-asleep pig into stepping out of a window thinking he 's boarding a train .
Sent 8: Daffy hides the window saying it 's '' too gruesome '' to watch .
Sent 9: Suddenly he hears train noises , and behind the shade , sees the still-drowsy Porky pulling away on an actual train and waving at Daffy .
Sent 10: Daffy finds this silly .
Sent 11: Then he bounces all around the room , '' Hoo-Hoo ! ''Sent 12: - ing wildly .
Question: What is Porky looking for in the big city?.
1, 2.

Paragraph- Sent 1: Ludo Decker and Anna Gotzlowski have been living together for two years .
Sent 2: Everyday routine has set in , with Ludo neglecting his household responsibilities much to Anna 's dislike , while he is in turn annoyed by her constant complaining .
Sent 3: When Ludo runs into his former lover Marie in the disco , and Anna 's old boyfriend Ralf comes to stay in their flat for a few days , the young couple faces serious jealousy and doubt in their relationship .
Sent 4: Anna secretly reads Ludo 's phone messages , while he in turn stumbles upon '' The List '' , an account of Anna 's former lovers -- including Ralf , who scores better than Ludo does .
Sent 5: After a number of provocations , Ludo beats Ralf in a restaurant , and angrily leaves Anna .
Sent 6: Even though the two still strongly care for each other , they end up sleeping with their respective ex-lovers .
Sent 7: Ralf confesses that he never stopped loving Anna , but she rejects him and tells Ludo what happened .
Sent 8: Even though Ludo has cheated on her as well , he angrily argues that she herself told him that , unlike men , women do not actually sleep with someone without feelings being involved .
Sent 9: Anna begs him to come home , but he only says that he has no home any more , and leaves .
Sent 10: Meanwhile , Ludo 's best friend Moritz desperately tries to get more successful with women , and ends up in a number of absurd situations .
Sent 11: In the end , he meets a young and beautiful sex-addict named Lana .
Sent 12: After a few weeks , Anna receives a letter from Ludo , who has traveled back to the place where they spent their first and only vacation together .
Question: who has traveled back to the place where they spent their first and only vacation together after he meets sex addict lana?.
11, 12.