TASK 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 (", ").
PROBLEM: Paragraph- Sent 1: What happens when a diver jumps off the diving board?
Sent 2: His gravitational potential energy changes to kinetic energy as he falls.
Sent 3: In other words, he falls faster and faster until reaching the water.
Sent 4: However, he can always regain his potential energy.
Sent 5: All he must do is get out of the water and climb back up.
Sent 6: This requires an input of kinetic energy.
Sent 7: These changes in energy are examples of energy conversion.
Sent 8: Energy can be converted from one form to another.
Sent 9: It can also be transferred from one object to another.
Sent 10: Think back to the leaf example.
Sent 11: The leaf was hanging from a branch.
Sent 12: At this time, it had gravitational potential energy.
Sent 13: As it came loose from the branch, gravity pulled it toward the ground.
Sent 14: The leaf started to fall, or move, toward the ground.
Sent 15: Its potential energy was changed into motion.
Sent 16: As it landed on the ground, it stopped moving.
Sent 17: As it lays on the ground, it has no potential to move.
Sent 18: If it does move it is because something else transferred energy to it.
Question: What are examples of energy conversion?.

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

PROBLEM: Paragraph- Sent 1: The troops, hearing the reports of the gun, came rushing out to see what was the matter.
Sent 2: They found that the mule had passed in his chips, and when they learned the cause they all agreed that I had served him just right.
Sent 3: Taking the saddle and bridle from the dead body, I proceeded into the post and delivered the dispatches to Captain Parker.
Sent 4: I then went over to Dick Curtis' house, which was headquarters for the scouts, and there put in several hours of solid sleep.
Sent 5: During the day General Hazen returned from Fort Harker, and he also had some important dispatches to send to General Sheridan.
Sent 6: I was feeling quite elated over my big ride; and seeing that I was getting the best of the other scouts in regard to making a record, I volunteered to carry General Hazen's dispatches to Fort Hays.
Sent 7: The General accepted my services, although he thought it was unnecessary for me to kill myself.
Sent 8: I told him that I had business at Fort Hays, and wished to go there anyway, and it would make no difference to the other scouts, for none of them appeared willing to undertake the trip.
Question: What did the man do after they had found the mule had passed?.

SOLUTION: 2, 3.

PROBLEM: Paragraph- Sent 1: Alexander fled Macedon with his mother, dropping her off with her brother, King Alexander I of Epirus in Dodona, capital of the Molossians.
Sent 2: He continued to Illyria, where he sought refuge with the Illyrian King and was treated as a guest, despite having defeated them in battle a few years before.
Sent 3: However, it appears Philip never intended to disown his politically and militarily trained son.
Sent 4: Accordingly, Alexander returned to Macedon after six months due to the efforts of a family friend, Demaratus, who mediated between the two parties.
Sent 5: In the following year, the Persian satrap (governor) of Caria, Pixodarus, offered his eldest daughter to Alexander's half-brother, Philip Arrhidaeus.
Sent 6: Olympias and several of Alexander's friends suggested this showed Philip intended to make Arrhidaeus his heir.
Sent 7: Alexander reacted by sending an actor, Thessalus of Corinth, to tell Pixodarus that he should not offer his daughter's hand to an illegitimate son, but instead to Alexander.
Sent 8: When Philip heard of this, he stopped the negotiations and scolded Alexander for wishing to marry the daughter of a Carian, explaining that he wanted a better bride for him.
Sent 9: Philip exiled four of Alexander's friends, Harpalus, Nearchus, Ptolemy and Erigyius, and had the Corinthians bring Thessalus to him in chains.
Question: How did Alexander try to change the situation and what was Philip's response?.

SOLUTION:
2.