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 (", ").

Example Input: Paragraph- Sent 1: Like flowing water, flowing ice erodes the land.
Sent 2: It also can deposit the material elsewhere.
Sent 3: Glaciers cause erosion in two main ways: plucking and abrasion.
Sent 4: Plucking is caused when sediments are picked up by a glacier.
Sent 5: They freeze to the bottom of the glacier and are carried away by the flowing ice.
Sent 6: Abrasion occurs when glaciers scrape over the Earths surface.
Sent 7: The ice sheet acts like sandpaper.
Sent 8: The ice contains sediments and rocks frozen in the ice.
Sent 9: The rocks and sediment grind away as the glacier moves.
Sent 10: They wear away rock.
Sent 11: They may also leave scratches and grooves in them.
Sent 12: Scientists use these grooves to learn about the direction the glacier has moved. 
Question: What are the marks glaciers leave?.
Example Output: 11, 12.

Example Input: Paragraph- Sent 1: Are there other examples of static discharge?
Sent 2: The answer is yes.
Sent 3: Lightning is a form of static discharge.
Sent 4: It is much more dramatic than what happens to your hand.
Sent 5: You can see how it occurs in the following diagram.
Sent 6: You have probably seen lightning in a rainstorm.
Sent 7: What does lighting have to do with static electricity?
Sent 8: As it turns out, everything.
Sent 9: During a rainstorm, clouds are pushed along by the wind.
Sent 10: Clouds develop regions of different charges.
Sent 11: This happens due to the movement of air molecules, water drops, and ice particles.
Sent 12: The negative charges are mostly at the base of the clouds.
Sent 13: The positive charges are mostly at the top.
Sent 14: The charges continue to build up.
Sent 15: Suddenly, you see the large discharge.
Sent 16: This is what we see as lightning.
Sent 17: In the video below, you can watch an awesome slow-motion lightning strike.
Sent 18: Be sure to wait for the real-time lightning strike at the end of the video. 
Question: When clouds are pushed forward by wind, they develop what?.
Example Output: 9, 10.

Example Input: Paragraph- Sent 1: Ireland has been inhabited since very ancient times, but Irish history really begins with the arrival of the Celts around the 6th century b.c.
Sent 2: , Ireland’s first documented invasion.
Sent 3: They brought with them iron weapons and chariots and codes of custom and conduct that quickly became dominant in the country.
Sent 4: This is the period of myths and legends, later romanticized by Irish writers, that still exercise their power today.
Sent 5: The Celts were organized along a family- and clan-based system, and Celtic Ireland became a series of independent kingdoms.
Sent 6: Nominally these kingdoms acknowledged an elected High King, with his seat at fabled Tara, as overlord.
Sent 7: There were no towns, and the cow was the medium of exchange.
Sent 8: Learning was revered, games were played, and the poet was held in awe.
Sent 9: Law and religion were important in Celtic culture.
Sent 10: The religion was druidic, and the law was an elaborate written code, interpreted by a class of professional lawyers known as brehons.
Sent 11: The brehon laws gave women a high status — they could own property, divorce, and even enter the professions.
Sent 12: Christianity and a Mission to Europe St. Patrick first came to Ireland as a prisoner, captured in an Irish raid on a Roman settlement in Britain.
Sent 13: He eventually escaped and returned to Ireland as a missionary in a.d.
Sent 14: By the time of Patrick’s death in a.d.
Sent 15: 465, the whole country was effectively Christianized — a peaceful process, without a single martyr, which speaks for Patrick’s natural diplomacy as well as his powers of persuasion.
Sent 16: Many legends surround his mission.
Sent 17: It was St. Patrick who used the example of the shamrock to explain the Christian Trinity to King Laoghaire and an assembled crowd at Tara. 
Question: What is Celtic religion like?.
Example Output:
1, 2, 3.

