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.

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?
Shoichi Washizawa

Passage: The Tibetan Empire emerged in the 7th century, but with the fall of the empire the region soon divided into a variety of territories. The bulk of western and central Tibet (Ü-Tsang) was often at least nominally unified under a series of Tibetan governments in Lhasa, Shigatse, or nearby locations; these governments were at various times under Mongol and Chinese overlordship. The eastern regions of Kham and Amdo often maintained a more decentralized indigenous political structure, being divided among a number of small principalities and tribal groups, while also often falling more directly under Chinese rule after the Battle of Chamdo; most of this area was eventually incorporated into the Chinese provinces of Sichuan and Qinghai. The current borders of Tibet were generally established in the 18th century. Question: Which Chinese provinces used to be the eastern part of Tibet?
Sichuan and Qinghai

Passage: In 1807, Thomas Young was possibly the first to use the term "energy" instead of vis viva, in its modern sense. Gustave-Gaspard Coriolis described "kinetic energy" in 1829 in its modern sense, and in 1853, William Rankine coined the term "potential energy". The law of conservation of energy was also first postulated in the early 19th century, and applies to any isolated system. It was argued for some years whether heat was a physical substance, dubbed the caloric, or merely a physical quantity, such as momentum. In 1845 James Prescott Joule discovered the link between mechanical work and the generation of heat. Question: Who coined the term "potential energy?"

William Rankine