{"pre_text": ["the aes corporation notes to consolidated financial statements 2014 ( continued ) december 31 , 2011 , 2010 , and 2009 may require the government to acquire an ownership interest and the current expectation of future losses .", "our evaluation indicated that the long-lived assets were no longer recoverable and , accordingly , they were written down to their estimated fair value of $ 24 million based on a discounted cash flow analysis .", "the long-lived assets had a carrying amount of $ 66 million prior to the recognition of asset impairment expense .", "kelanitissa is a build- operate-transfer ( bot ) generation facility and payments under its ppa are scheduled to decline over the ppa term .", "it is possible that further impairment charges may be required in the future as kelanitissa gets closer to the bot date .", "kelanitissa is reported in the asia generation reportable segment .", "asset impairment expense for the year ended december 31 , 2010 consisted of : ( in millions ) ."], "post_text": ["southland 2014in september 2010 , a new environmental policy on the use of ocean water to cool generation facilities was issued in california that requires generation plants to comply with the policy by december 31 , 2020 and would require significant capital expenditure or plants 2019 shutdown .", "the company 2019s huntington beach gas-fired generation facility in california , which is part of aes 2019 southland business , was impacted by the new policy .", "the company performed an asset impairment test and determined the fair value of the asset group using a discounted cash flow analysis .", "the carrying value of the asset group of $ 288 million exceeded the fair value of $ 88 million resulting in the recognition of asset impairment expense of $ 200 million for the year ended december 31 , 2010 .", "southland is reported in the north america generation reportable segment .", "tisza ii 2014during the third quarter of 2010 , the company entered into annual negotiations with the offtaker of tisza ii .", "as a result of these preliminary negotiations , as well as the further deterioration of the economic environment in hungary , the company determined that an indicator of impairment existed at september 30 , 2010 .", "thus , the company performed an asset impairment test and determined that based on the undiscounted cash flow analysis , the carrying amount of the tisza ii asset group was not recoverable .", "the fair value of the asset group was then determined using a discounted cash flow analysis .", "the carrying value of the tisza ii asset group of $ 160 million exceeded the fair value of $ 75 million resulting in the recognition of asset impairment expense of $ 85 million during the year ended december 31 , 2010 .", "deepwater 2014in 2010 , deepwater , our 160 mw petcoke-fired merchant power plant located in texas , experienced deteriorating market conditions due to increasing petcoke prices and diminishing power prices .", "as a result , deepwater incurred operating losses and was shut down from time to time to avoid negative operating margin .", "in the fourth quarter of 2010 , management concluded that , on an undiscounted cash flow basis , the carrying amount of the asset group was no longer recoverable .", "the fair value of deepwater was determined using a discounted cash flow analysis and $ 79 million of impairment expense was recognized .", "deepwater is reported in the north america generation reportable segment. ."], "table": [["", "2010 ( in millions )"], ["southland ( huntington beach )", "$ 200"], ["tisza ii", "85"], ["deepwater", "79"], ["other", "25"], ["total", "$ 389"]], "table_ori": [["", "2010  (in millions)"], ["Southland (Huntington Beach)", "$200"], ["Tisza II", "85"], ["Deepwater", "79"], ["Other", "25"], ["Total", "$389"]]}

Question: the deepwater write-down was what percent of total impairments?
Evidence:
table_3: the deepwater of 2010 ( in millions ) is 79 ;
table_5: the total of 2010 ( in millions ) is $ 389 ;
Program: divide(79, 389)
Answer:
str_answer: 19.5%
exe_answer: 0.20308