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 (", ").

Q: Paragraph- Sent 1: Breathing is the process of moving air into and out of the lungs.
Sent 2: The process depends on a muscle called the diaphragm.
Sent 3: This is a large, sheet-like muscle below the lungs.
Sent 4: Inhaling, or breathing in, occurs when the diaphragm muscle tightens.
Sent 5: This increases the size of the chest.
Sent 6: This too decreases air pressure inside the lungs.
Sent 7: This action allows air and gases to enter the lungs.
Sent 8: Exhaling, or breathing out, occurs when the diaphragm muscle relaxes.
Sent 9: This decreases the size of the chest.
Sent 10: This increases air pressure inside the lungs.
Sent 11: This action allows for air to leave the lungs.
Sent 12: When you inhale, air enters the respiratory system through your nose and ends up in your lungs, where gas exchange with the blood takes place.
Sent 13: What happens to the air along the way?
Sent 14: In the nose, mucus and hairs trap any dust or other particles in the air.
Sent 15: The air is also warmed and moistened.
Sent 16: Next, air passes through a passageway that is connected to the windpipe.
Sent 17: The air then finds its way to the lungs.
Sent 18: In the chest, the windpipe splits so that air enters both the right and left lung.
Question: What happens to the air pressure inside your lungs when you inhale?.

A: 4, 6.
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Q: Paragraph- Sent 1: A flood occurs when a river overflows its banks.
Sent 2: This might happen because of heavy rains.
Sent 3: Floodplains In very flat regions, flood water may spread out on the surface of the land.
Sent 4: It then slows down and drops its sediment.
Sent 5: If a river floods often, a floodplain develops.
Sent 6: A floodplain is an area where a thick layer of rich soil is left behind as the floodwater recedes.
Sent 7: Thats why floodplains are usually good places for growing plants.
Sent 8: They are very flat areas and they have very rich soils.
Sent 9: The Nile River valley is a great example of a floodplain.
Sent 10: Each year, the Nile River rises over its banks.
Sent 11: This floodwater carries a lot of sediment.
Sent 12: This sediment has been eroded off areas of land from upstream.
Sent 13: This sediment is dropped as the water slows down after spreading across the land.
Sent 14: What is left behind is a very rich soil.
Sent 15: Thats why crops can be raised in the middle of a sandy desert.
Sent 16: Natural Levees A flooding river often forms natural levees along its banks.
Sent 17: A levee is a raised strip of sediments deposited close to the waters edge.
Question: What valley contains a river which rises over its banks each year?.

A: 9, 10.
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Q: Paragraph- Sent 1: Alexander then chased Darius, first into Media, and then Parthia.
Sent 2: The Persian king no longer controlled his own destiny, and was taken prisoner by Bessus, his Bactrian satrap and kinsman.
Sent 3: As Alexander approached, Bessus had his men fatally stab the Great King and then declared himself Darius' successor as Artaxerxes V, before retreating into Central Asia to launch a guerrilla campaign against Alexander.
Sent 4: Alexander buried Darius' remains next to his Achaemenid predecessors in a regal funeral.
Sent 5: He claimed that, while dying, Darius had named him as his successor to the Achaemenid throne.
Sent 6: The Achaemenid Empire is normally considered to have fallen with Darius.
Sent 7: Alexander viewed Bessus as a usurper and set out to defeat him.
Sent 8: This campaign, initially against Bessus, turned into a grand tour of central Asia.
Sent 9: Alexander founded a series of new cities, all called Alexandria, including modern Kandahar in Afghanistan, and Alexandria Eschate ("The Furthest") in modern Tajikistan.
Sent 10: The campaign took Alexander through Media, Parthia, Aria (West Afghanistan), Drangiana, Arachosia (South and Central Afghanistan), Bactria (North and Central Afghanistan), and Scythia.
Sent 11: Spitamenes, who held an undefined position in the satrapy of Sogdiana, in 329 BC betrayed Bessus to Ptolemy, one of Alexander's trusted companions, and Bessus was executed.
Sent 12: However, when, at some point later, Alexander was on the Jaxartes dealing with an incursion by a horse nomad army, Spitamenes raised Sogdiana in revolt.
Sent 13: Alexander personally defeated the Scythians at the Battle of Jaxartes and immediately launched a campaign against Spitamenes, defeating him in the Battle of Gabai.
Sent 14: After the defeat, Spitamenes was killed by his own men, who then sued for peace.
Question: Who claimed that Darius named him his successor as he died?.

A:
4, 5.
****