Q: In this task, you are given a text which is the body of a document. You are given a question and options. Pick the correct number. Don't generate anything else apart from the numbers provided in options.
Context: World Tower is a 230 m (750 ft) skyscraper located at 91 Liverpool Street Sydney Australia. Construction began in 2001 and was completed in 2004. It was constructed by Meriton Apartments Pty Ltd which is owned by developer Harry Triguboff. World Tower was the 2004 Bronze recipient of the Emporis Skyscraper Award and was briefly Australia's tallest residential building.
Question: The document can be classified to which topic?
Options: 1)Artist, 2)Building, 3)Album, 4)Animal, 5)Athlete
A:
2