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 (", ").
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Question: Paragraph- Sent 1: What happens when two forces act in opposite directions?
Sent 2: Net force is the difference between the two forces.
Sent 3: In other words, one force is subtracted from the other.
Sent 4: Think back to the book example.
Sent 5: One force was opposite the other.
Sent 6: The forces were equal in each direction.
Sent 7: In this case, the net force is zero.
Sent 8: Because the forces on the book are balanced, the book doesn't move.
Sent 9: It does not fall to the ground.
Sent 10: The table is not breaking.
Sent 11: The book is not falling to the ground.
Sent 12: Both are evidence that the force are balanced.
Sent 13: Situations like these are common.
Sent 14: Can you think of objects sitting on shelves or tables?
Sent 15: These are all examples of balanced forces.
Sent 16: Thanks to balanced forces objects stay where you put them.
Question: What is the term for one force being subtracted from the other.

Answer: 2, 3.

Question: Paragraph- Sent 1: NEW DELHI, India (CNN) -- A mob killed a Hindu man in the Indian state of Orissa Thursday as another group attacked a church in another part of the state's troubled Kandhamal district, authorities said Friday.
Sent 2: Christian activists stage a peace march in Mumbai, India earlier this month.
Sent 3: Krishan Kumar, Kandhamal's top administrative official, told CNN the Hindu man was hacked to death at Raikia.
Sent 4: Orissa state, which is dominated by tribal people, borders the Bay of Bengal in east-central India, and Kandhamal is located in the center of the state, which has been racked by Hindu-Christian violence.
Sent 5: Praveen Kumar, Kandhamal's superintendent of police, said an investigation is under way in both incidents, and did not say whether any suspects were being sought.
Sent 6: Twenty-three civilians, excluding police, have died in the Hindu-Christian violence in Kandhamal this month, according to the administrator.
Sent 7: "Arrests are continuing," Praveen Kumar said when asked how many people have been held so far in connection with the violence.
Sent 8: The latest attacks occurred on a day when India's federal government called upon the state administration to take "effective, focused and firm measures" to control the conflicts.
Sent 9: On Thursday, federal Home Secretary Madhukar Gupta asked the Orissa government to ensure effective deployment of paramilitaries in the state.
Sent 10: -- CNN's Harmeet Shah Singh contributed to this report.
Question: Do any tribal people live in the same state as the Hindu man who was killed?.

Answer: 1, 4.

Question: Paragraph- Sent 1: Eric , a young boy , is excited about his birthday after reading a book and believes that a train will come for him , despite his sister Jill 's disbelief .
Sent 2: A few hours later , the train station 's control tower wakes up and in the roundhouse , Tillie , a young little blue switcher engine , along with her best bird friend , Chip , wakes up four other trains : Georgia , a kind all-purpose engine , Farnsworth , a stuck-up passenger engine , Jebediah , a worn-out old engine , and Pete , a gruff , burly freight engine .
Sent 3: After the tower assigns Farnsworth and Pete their jobs , Tillie tries to help with the milk train assigned to Jebediah , but the tower insists that she is too small for the job .
Sent 4: Georgia is assigned to pull the birthday train .
Sent 5: A clown named Rollo leads the toys into the train , including Stretch , a basketball player ; Missy , a ballerina ; a Handy Pandy , a panda ; Perky , an elephant ; and Grumpella , a stuffed bird .
Sent 6: During her journey , Georgia breaks down and is taken back to the roundhouse by Doc .
Sent 7: Left behind , Rollo eventually takes Doc 's advice of flagging down one of the other engines returning from their daily runs over the mountain .
Sent 8: Farnsworth and Pete turn down their offers to pull the train .
Sent 9: Meanwhile , Tillie asks the tower to rescue the stranded train , but he insists that Tillie will never do the job .
Sent 10: Jebediah turns down his offer to pull the train because of his age , and returns to the roundhouse .
Sent 11: Chip and Tillie sneak past the sleeping tower and pulls the birthday train up a mountain .
Question: Which is the worn out engine?.

Answer:
2.