Definition: 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: Paragraph- Sent 1: Walking didn’t build up much heat; it just moved the air enough to chill me more.
Sent 2: After I’d walked about a block, a car rolled up behind me.
Sent 3: It slowed down as it neared me and I started to worry.
Sent 4: This wasn’t the best of neighborhoods.
Sent 5: I kept my eyes straight ahead and tried to walk more quickly without showing it.
Sent 6: I heard an automatic window roll down.
Sent 7: “Hey,” said a male voice, “do you need some help?” I turned around.
Sent 8: The man looked over forty, and he was driving a car I’d be afraid to drive on this street.
Sent 9: “It’s a long way to anywhere worth going,” he said.
Sent 10: “Would you like some help?” “Ah, I think I’m fine, thanks,” I told him, and turned back to the sidewalk.
Sent 11: “Really, I’d like to help.
Sent 12: Please, hop in.
Sent 13: You don’t look dressed for this weather.” I glanced back over my shoulder.
Sent 14: “No thanks, sir!
Sent 15: I’m just fine.
Sent 16: Really, don’t worry about me.” “Nathan Spencer, I offer you help.
Sent 17: I advise that you not refuse me a third time.” I stopped and looked back at him, surprised.
Sent 18: He met my eyes coolly.
Sent 19: “How do you know my name?” “I know your family.
Sent 20: Get in. 
Question: Where was the man?.
Output:
2, 6, 8.