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: When Hope, the eagle that towered, could see No cliff beyond him in the sky, His pinions were bent droopingly-- And homeward turned his softened eye.
Sent 2: 'Twas sunset: When the sun will part There comes a sullenness of heart To him who still would look upon The glory of the summer sun.
Sent 3: That soul will hate the ev'ning mist So often lovely, and will list To the sound of the coming darkness (known To those whose spirits hearken) as one Who, in a dream of night, _would_ fly, But _cannot_, from a danger nigh.
Sent 4: What tho' the moon--tho' the white moon Shed all the splendor of her noon, _Her_ smile is chilly--and _her_ beam, In that time of dreariness, will seem (So like you gather in your breath) A portrait taken after death.
Sent 5: And boyhood is a summer sun Whose waning is the dreariest one-- For all we live to know is known, And all we seek to keep hath flown-- Let life, then, as the day-flower, fall With the noon-day beauty--which is all.
Sent 6: I reached my home--my home no more-- For all had flown who made it so.
Sent 7: I passed from out its mossy door, And, tho' my tread was soft and low, A voice came from the threshold stone Of one whom I had earlier known-- O, I defy thee, Hell, to show On beds of fire that burn below, An humbler heart--a deeper woe.
Question: Does this talk about a hopeful future or reminisce of the past?.

Output: 2, 4, 5, 6, 7.

Input: Consider Input: Paragraph- Sent 1: "What goes up must come down."Sent 2: You have probably heard that statement before.
Sent 3: At one time this statement was true, but no longer.
Sent 4: Since the 1960s, we have sent many spacecraft into space.
Sent 5: Some are still traveling away from Earth.
Sent 6: So it is possible to overcome gravity.
Sent 7: Do you need a giant rocket to overcome gravity?
Sent 8: No, you actually overcome gravity every day.
Sent 9: Think about when you climb a set of stairs.
Sent 10: When you do, you are overcoming gravity.
Sent 11: What if you jump on a trampoline?
Sent 12: You are overcoming gravity for a few seconds.
Sent 13: Everyone can overcome gravity.
Sent 14: You just need to apply a force larger than gravity.
Sent 15: Think about that the next time you jump into the air.
Sent 16: You are overcoming gravity for a brief second.
Sent 17: Enjoy it while it lasts.
Sent 18: Eventually, gravity will win the battle.
Question: Is the statement "what comes up must go down" no longer true?.

Output: 1, 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: Do metal surfaces that appear smooth always appear smooth when looked at under a microscope?.
Output: 5, 8, 9.