Detailed Instructions: In this task, you're given a question, along with three passages, 1, 2, and 3. Your job is to determine which passage can be used to answer the question by searching for further information using terms from the passage. Indicate your choice as 1, 2, or 3.
Problem:Question: How long had Johnson been working at the Gardens? Passage 1:After rejecting an invitation for a one-year guest professorship by the University of California, Berkeley, Stourzh returned to Vienna in 1958 to organize the newly created Austrian Association for Foreign Policy and International Relations; he was its general secretary until 1962. In 1962, Stourzh passed his habilitation and became Docent for Modern History at the University of Vienna. In the same year, upon a suggestion by Bruno Kreisky, he entered Austria's Federal Ministry for European and International Affairs, where he had the desk of the Council of Europe. In 1963, he received a call from the Free University of Berlin to become a professor of Modern History, especially American history, and to head, at the same time, the section for American history at the newly founded John F. Kennedy-Institute for North American Studies of that University. He accepted the call and remained at the Free University until 1969, with an interruption due to a research stay at the Institute for Advanced Studies in Princeton. In 1969, he became professor for Modern History at the University of Vienna, succeeding Friedrich Engel-Janosi. He has remained in that position until becoming professor emeritus in 1997.
 Passage 2:Persoonia terminalis was first reported by Lawrie Johnson of the Royal Botanic Gardens, Sydney, in the 1981 edition of Flora of New South Wales. He viewed it as a distinctive subspecies of Persoonia nutans, a broadly defined species that included many forms since classified as distinct. Queensland botanists Trevor Donald Stanley and Estelle M. Ross classed P.terminalis as part of Persoonia oxycoccoides in their 1983 work Flora of South-eastern Queensland. They considered it more likely a species in its own right, as they believed the description of the Queensland populations did not match the P. oxycoccoides from central New South Wales. Upon re-examining Persoonia nutans and Persoonia oxycoccoides, Johnson and Peter Weston concluded that there were in fact several distinct species, and that Persoonia terminalis was described as such in 1991. The type specimen was collected south of the Torrington pub on the Emmaville–Torrington road by Weston and ecologist Peter Richards, and is now housed in the National Herbarium of New South Wales, which is part of the Royal Botanic Gardens and Domain Trust Sydney and Office of Environment and Heritage. The Herbarium houses over 1.2million other specimens. The generic name Persoonia is derived from the name of South African botanist Christiaan Hendrik Persoon. The specific name terminalis refers to the inflorescences (clusters of flowers) that are in this species at the ends of the branchlets. Its common name is the Torrington geebung.
 Passage 3:Haschka was born and died in Vienna. In his youth, he was a member of the Society of Jesus. On the suppression of the Society (1773) he devoted himself, in secular life, to poetry, this was now to become his vocation and his means of livehood. His pupil, the wealthy Johann Baptist von Alxinger, an imitator of Christoph Martin Wieland, came to his assistance. Haschka also found aid in the home of poet Karoline Pichler. Having left the Jesuits, under the influence of Josephinism, he became a freemason and wrote odes against the papacy during the presence of Pius VI in Vienna, as well as against the religious orders. He returned to Catholicism after the death of Joseph II, Holy Roman Emperor, and was selected to compose a national anthem, which was first sung on 12 February 1797, at the celebration of Francis II's birthday. Haschka was given a position as assistant in the library of the University of Vienna and was made instructor in aesthetics in the newly founded Theresianum. He retired in 1824.

Solution:
2