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 Input:
Passage: In Japan, the Mayor of Nagano, Shoichi Washizawa said that it has become a "great nuisance" for the city to host the torch relay prior to the Nagano leg. Washizawa's aides said the mayor's remark was not criticism about the relay itself but about the potential disruptions and confusion surrounding it.　A city employee of the Nagano City Office ridiculed the protests in Europe, he said "They are doing something foolish", in a televised interview. Nagano City officially apologized later and explained what he had wanted to say was "Such violent protests were not easy to accept". Also citing concerns about protests as well as the recent violence in Tibet, a major Buddhist temple in Nagano cancelled its plans to host the opening stage of the Olympic torch relay, this temple was vandalised by an un-identified person the day after in apparent revenge, Question: Who was the mayor of Nagano?

Ex Output:
Shoichi Washizawa


Ex Input:
Passage: Modern electrification systems take AC energy from a power grid which is delivered to a locomotive and converted to a DC voltage to be used by traction motors. These motors may either be DC motors which directly use the DC or they may be 3-phase AC motors which require further conversion of the DC to 3-phase AC (using power electronics). Thus both systems are faced with the same task: converting and transporting high-voltage AC from the power grid to low-voltage DC in the locomotive. Where should this conversion take place and at what voltage and current (AC or DC) should the power flow to the locomotive? And how does all this relate to energy-efficiency? Both the transmission and conversion of electric energy involve losses: ohmic losses in wires and power electronics, magnetic field losses in transformers and smoothing reactors (inductors). Power conversion for a DC system takes place mainly in a railway substation where large, heavy, and more efficient hardware can be used as compared to an AC system where conversion takes place aboard the locomotive where space is limited and losses are significantly higher. Also, the energy used to blow air to cool transformers, power electronics (including rectifiers), and other conversion hardware must be accounted for. Question: What nowdays electrification systems can use?

Ex Output:
DC motors which directly use the DC or they may be 3-phase AC motors


Ex Input:
Passage: The new government drafted and implemented a constitution in 1923 based on a parliamentary system. Saad Zaghlul was popularly elected as Prime Minister of Egypt in 1924. In 1936, the Anglo-Egyptian Treaty was concluded. Continued instability due to remaining British influence and increasing political involvement by the king led to the dissolution of the parliament in a military coup d'état known as the 1952 Revolution. The Free Officers Movement forced King Farouk to abdicate in support of his son Fuad. British military presence in Egypt lasted until 1954. Question: How long did British military presence remain in Egypt?

Ex Output:

1954