This task is about writing a correct answer for the reading comprehension task. Based on the information provided in a given passage, you should identify the shortest continuous text span from the passage that serves as an answer to the given question. Avoid answers that are incorrect or provides incomplete justification for the question.

Example Input: Passage: Advanced economies led global economic growth prior to the financial crisis with "emerging" and "developing" economies lagging behind. The crisis completely overturned this relationship. The International Monetary Fund found that "advanced" economies accounted for only 31% of global GDP while emerging and developing economies accounted for 69% of global GDP from 2007 to 2014. In the tables, the names of emergent economies are shown in boldface type, while the names of developed economies are in Roman (regular) type. Question: How much global GDP did "advanced" economies account for from 2007 to 2014?
Example Output: 31%

Example Input: Passage: Typical of Slavic languages, Czech marks its verbs for one of two grammatical aspects: perfective and imperfective. Most verbs are part of inflected aspect pairs—for example, koupit (perfective) and kupovat (imperfective). Although the verbs' meaning is similar, in perfective verbs the action is completed and in imperfective verbs it is ongoing. This is distinct from past and present tense, and any Czech verb of either aspect can be conjugated into any of its three tenses. Aspect describes the state of the action at the time specified by the tense. Question: In perfective verbs, what state is the action the verb describes in?
Example Output: completed

Example Input: Passage: As of the 2010 census, there were 579,999 people, 230,233 households, and 144,120 families residing in the city. The population density was 956.4 inhabitants per square mile (321.9/km²). There were 256,930 housing units at an average density of 375.9 per square mile (145.1/km²). Question: How many housing units were there for the 2010 census?
Example Output:
256,930