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: Derek was sad.
Sent 2: He was playing in the school yard at recess and a girl in his class was being mean to him.
Sent 3: Her name was Sandy.
Sent 4: Sandy was best friends with Alexis.
Sent 5: Alexis was nice to Derek, but Sandy kept being mean.
Sent 6: Sandy kicked dirt at Derek and called him mean names.
Sent 7: Alexis felt bad that her friend was so nasty to Derek.
Sent 8: Derek knew that Sandy did not like him, so he sat down in the school yard with a big frown.
Sent 9: All of a sudden, a stranger walked up to Derek and asked him if he wanted some rock sugar candy.
Sent 10: He told Derek he had lots of sugar rock candy in his car in the parking lot.
Sent 11: Derek remembered his parents telling him never to talk to strangers, so he started running away from the man.
Sent 12: Sandy and Alexis were on the jungle gym and they saw Derek running from the stranger.
Sent 13: They went to tell their teacher, Mrs. Mustard, who was still inside the classroom.
Sent 14: Sandy and Alexis came into the classroom screaming for help.
Sent 15: Derek ran into the classroom right after the girls.
Sent 16: Mrs. Mustard looked out into the recess yard, but the stranger was gone.
Sent 17: Jenny, Mrs. Mustard's helper, called the police to report what had happened.
Question: What happened with Derek and the stranger?.

Ex Output:
1, 2.

Ex Input:
Paragraph- Sent 1: Is this an insect or an animal?
Sent 2: A snail is an animal just like you and me.
Sent 3: Thats right, you too are an animal.
Sent 4: No, you don't look like a snail.
Sent 5: You do have some things in common.
Sent 6: Animals can be divided into many groups.
Sent 7: These groups are decided based on their characteristics.
Sent 8: All animals have some basic features in common.
Sent 9: That does not mean they are the same.
Sent 10: They also have many differences.
Sent 11: For example, snails are mollusks and not insects.
Sent 12: Mollusks have a unique set of features.
Sent 13: Notice the large foot that allows it to move.
Sent 14: Yes, it only has one foot.
Sent 15: Did you notice the long antennas on its head?
Sent 16: This is where the snails eyes are.
Sent 17: They are on the end of the antenna.
Sent 18: They are not on its head like most animals.
Sent 19: The foot and eyes are unique features.
Sent 20: Scientists use these features to place animals into groups.
Question: What are two special features of a snail?.

Ex Output:
12, 13, 14, 15, 16.

Ex Input:
Paragraph- Sent 1: Johnnie had a set of small volumes of English verse, extensively annotated by his own hand, which Stoddard had brought to her early in their acquaintance, leaving it with her more as a gift than as a loan.
Sent 2: She kept these little books after all the others had gone back.
Sent 3: She had read and reread them--cullings from Chaucer, from Spenser, from the Elizabethan lyrists, the border balladry, fierce, tender, oh, so human--till she knew pages of them by heart, and their vocabulary influenced her own, their imagery tinged all her leisure thoughts.
Sent 4: It seemed to her, whenever she debated returning them, that she could not bear it.
Sent 5: She would get them out and sit with one of them open in her hands, not reading, but staring at the pages with unseeing eyes, passing her fingers over it, as one strokes a beloved hand, or turning through each book only to find the pencilled words in the margins.
Sent 6: She would be giving up part of herself when she took these back.
Sent 7: Yet it had to be done, and one miserable morning she made them all into a neat package, intending to carry them to the mill and place them on Stoddard's desk thus early, when nobody would be in the office.
Sent 8: Then the children came in; Deanie was half sick; and in the distress of getting the ailing child comfortably into her own bed, Johnnie forgot the books.
Sent 9: Taking them in at noon, she met Stoddard himself.
Question: What did Johnnie do that made her feel like she was giving up part of herself?.

Ex Output:
6, 7.