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: Rivers flowing over gentle slopes move more slowly.
Sent 2: They move much more slowly than a mountain stream.
Sent 3: These slow moving streams create different types of features than mountain streams.
Sent 4: Slow moving water erodes the sides of their channels more than the bottom.
Sent 5: Also, large curves in the stream form.
Sent 6: These curves are called meanders.
Sent 7: Meanders are caused by erosion and deposition.
Sent 8: Remember, faster moving water causes erosion more quickly.
Sent 9: Slower moving water erodes material more slowly.
Sent 10: If water is moving slowly enough, the sediment being carried may settle out.
Sent 11: This settling out, or dropping off, of sediment is deposition.
Sent 12: The curves are called meanders because they slowly wander over the land.
Sent 13: As meanders erode from side to side, they create a floodplain.
Sent 14: This is a broad, flat area on both sides of a river.
Sent 15: Eventually, a meander may become cut off from the rest of the river.
Sent 16: This forms an oxbow lake.
Question: Do meanders cause oxbow lakes?.
[A]: 15, 16.

[Q]: Paragraph- Sent 1: Ahead of next week's scheduled execution of convicted killer Christopher Sepulvado, the Louisiana Department of Corrections has switched to the same controversial two-drug combination that was used in Ohio this month, the Louisiana department said.
Sent 2: "The reason for the change is that DOC has been unable to procure the drug, pentobarbital, specified in the one-drug protocol," DOC spokeswoman Pam Laborde said in a statement.
Sent 3: "The Department will continue to attempt to obtain the drug or drugs necessary for either of the two protocols."Sent 4: Gary Clements, part of Sepulvado's legal team, said an appeal will be filed Tuesday.
Sent 5: Ohio execution points to flaws in lethal injection "We're not challenging capital punishment in his case ... just how it's going to be done," Clements said.
Sent 6: Sepulvado's execution is scheduled for February 5.
Sent 7: He was sentenced to death for killing his 6-year-old stepson in 1992.
Sent 8: Like Ohio, Louisiana has been forced to find new drug protocols after European-based manufacturers banned U.S. prisons from using their drugs in executions -- among them, Danish-based Lundbeck, which manufactures pentobarbital.
Sent 9: Ohio inmate Dennis McGuire appeared to gasp and convulse for about 10 minutes before he died January 16 by lethal injection using the new combination of drugs -- midazolam, a sedative; and the painkiller hydromorphone -- according to reporters who witnessed the execution.
Sent 10: McGuire's family said the execution was "torture."Sent 11: Controversial execution in Ohio uses new drug combination.
Question: What is the result of European-based drug manufacturers banning U.S. prisons from using their drugs in executions?.
[A]: 1, 8.

[Q]: Paragraph- Sent 1: Milwaukee, Wisconsin (CNN) -- President Barack Obama, in a bid to create jobs and boost economic growth, called on Congress on Monday to pass a $50 billion plan to renew the country's transportation infrastructure.
Sent 2: His address was the first of two speeches the president is scheduled to make this week to frame his administration's ongoing response to the recession, less than two months ahead of midterm elections in which Democratic majorities in the House and Senate are in jeopardy.
Sent 3: "Today, I am announcing a new plan for rebuilding and modernizing America's roads, and rails and runways for the long term," said Obama, who spoke on Labor Day in Milwaukee, Wisconsin -- a state with competitive gubernatorial and U.S. Senate races.
Sent 4: "We used to have the best infrastructure in the world.
Sent 5: We can have it again," he said to loud cheers from a crowd of union workers.
Sent 6: The proposal envisions -- over a six year period -- rebuilding 150,000 miles of roads, 4,000 miles of rail and 150 miles of airport runways.
Sent 7: It also would include modernizing the nation's air traffic control system in an effort to reduce delays and travel time.
Sent 8: "This will not only create jobs immediately.
Sent 9: It's also going to make our economy hum over the long haul," said the president.
Sent 10: Obama hopes to work with Congress to enact an up-front investment of $50 billion -- an amount a White House statement said would represent a significant chunk of new spending on infrastructure.
Sent 11: The investment would then be paired with what the administration called a framework to improve transportation spending.
Sent 12: The long-term plan would include the establishment of an Infrastructure Bank, which would leverage federal dollars and focus on projects that could deliver the the biggest bang for the buck, Obama said.
Sent 13: The president stressed the need for Democrats and Republicans to work together on the transportation initiative, which would need to be approved by Congress.
Question: In addition to repairing 150 miles of airport runways, what other impact would this plan have on air traffic?.
[A]:
6, 7.