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.

[EX Q]: Passage: In 2011, it became apparent that the bail-out would be insufficient and a second bail-out amounting to €130 billion ($173 billion) was agreed in 2012, subject to strict conditions, including financial reforms and further austerity measures. As part of the deal, there was to be a 53% reduction in the Greek debt burden to private creditors and any profits made by Eurozone central banks on their holdings of Greek debt are to be repatriated back to Greece. Greece achieved a primary government budget surplus in 2013. In April 2014, Greece returned to the global bond market as it successfully sold €3 billion worth of five-year government bonds at a yield of 4.95%. Greece returned to growth after six years of economic decline in the second quarter of 2014, and was the Eurozone's fastest-growing economy in the third quarter. Question: In what year did Greece realize a budget surplus?
[EX A]: 2013

[EX Q]: Passage: In January 1956, the new Constitution of Egypt was drafted, entailing the establishment of a single-party system under the National Union (NU), a movement Nasser described as the "cadre through which we will realize our revolution". The NU was a reconfiguration of the Liberation Rally, which Nasser determined had failed in generating mass public participation. In the new movement, Nasser attempted to incorporate more citizens, approved by local-level party committees, in order to solidify popular backing for his government. The NU would select a nominee for the presidential election whose name would be provided for public approval. Question: What was the dominant political party? 
[EX A]: National Union

[EX Q]: Passage: The first emperor of the Ming dynasty, Zhu Yuanzhang (the Hongwu Emperor), who overthrew the Yuan dynasty, renamed the city Yingtian, rebuilt it, and made it the dynastic capital in 1368. He constructed a 48 km (30 mi) long city wall around Yingtian, as well as a new Ming Palace complex, and government halls. It took 200,000 laborers 21 years to finish the project. The present-day City Wall of Nanjing was mainly built during that time and today it remains in good condition and has been well preserved. It is among the longest surviving city walls in China. The Jianwen Emperor ruled from 1398 to 1402. Question: What did Zhu Yuanzhang build around the city of Nanjing?
[EX A]:
long city wall