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: Mach argued that, in effect, the water experiment in an otherwise empty universe would remain flat. But if another object were introduced into this universe, perhaps a distant star, there would now be something relative to which the bucket could be seen as rotating. The water inside the bucket could possibly have a slight curve. To account for the curve that we observe, an increase in the number of objects in the universe also increases the curvature in the water. Mach argued that the momentum of an object, whether angular or linear, exists as a result of the sum of the effects of other objects in the universe (Mach's Principle). Question: Mach argued that the momentum of an object exists as a result of the sum of the effects of what?
[EX A]: effects of other objects in the universe

[EX Q]: Passage: The site where the Saint Petersburg Passage sprawls had been devoted to trade since the city's foundation in the early 18th century. It had been occupied by various shops and warehouses (Maly Gostiny Dvor, Schukin Dvor, Apraksin Dvor) until 1846, when Count Essen-Stenbock-Fermor acquired the grounds to build an elite shopping mall for the Russian nobility and wealthy bourgeoisie. Stenbock-Fermor conceived of the Passage as more than a mere shopping mall, but also as a cultural and social centre for the people of St Petersburg. The edifice contained coffee-houses, confectioneries, panorama installations, an anatomical museum, a wax museum, and even a small zoo, described by Dostoyevsky in his extravaganza "Crocodile, or Passage through the Passage". The concert hall became renowned as a setting for literary readings attended by the likes of Dostoevsky and Turgenev. Parenthetically, the Passage premises have long been associated with the entertainment industry and still remains home to the Komissarzhevskaya Theatre. Question: What famous author described parts of the mall in his books?
[EX A]: Dostoyevsky

[EX Q]: Passage: The exact number of speakers of Somali is unknown. One source estimates that there are 7.78 million speakers of Somali in Somalia itself and 12.65 million speakers globally. The Somali language is spoken by ethnic Somalis in Greater Somalia and the Somali diaspora. Question: Along with Greater Somalia ethnic Somalis, who speaks Somali?
[EX A]:
the Somali diaspora