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: Paragraph- Sent 1: A Republican bid to keep the government open past Friday includes no new money for the construction of a border wall along the U.S.-Mexico border, according to several congressional aides familiar with ongoing talks.
Sent 2: GOP leaders submitted the new offer Tuesday afternoon in an effort to appease Democrats, whose votes are needed to avert a shutdown of federal agencies, several House and Senate aides said.
Sent 3: However, Republicans also insisted on increases in border security and defense spending, including money to repair existing fencing and new surveillance technology to patrol the nearly 2,000-mile border.
Sent 4: Democrats have indicated that they would support such appropriations so long as no money goes toward an actual wall.
Question: Who has to be appeased to keep the government open?.
Example solution: 1, 2.
Example explanation: The question is: Who has to be appeased to keep the government open? The phrase "appease Democrats" is mentioned in Sent 2, about accepting offer that is mentioned in Sent 1 to "keep the government open". So, Sent 1 and Sent 2 are the sentences needed to answer this question.

Problem: Paragraph- Sent 1: After his cousin Joe dies , Layne Vassimer and his girlfriend Macy , along with their friends Stephen , Maurice , Iris and Katrina , decide to clean up Joe 's house with the intention of selling it .
Sent 2: When they see it for the first time , they discover the house completely covered in plates of iron armor .
Sent 3: The group also finds crop circles in the nearby cornfield .
Sent 4: When Iris , one of their friends , suddenly disappears they realize something is really wrong .
Sent 5: During a blackout , the house is attacked by aliens , who had previously killed Joe and abducted Iris .
Sent 6: The group figures out the aliens are allergic to iron , Joe had covered the house in it to keep them out .
Sent 7: They attempt to fight the aliens off , but the house is eventually blown up with Layne , Macy , and Katrina the only survivors .
Sent 8: In the end , they drive off , listening to the radio .
Sent 9: They hear a news report stating that the blackout they experienced affects five western states and parts of Canada .
Sent 10: They also hear that people everywhere are being attacked by `` strange creatures . ''. 
Question: Who'e house was attacked by aliens during a blackout?.

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Solution: 1, 5.