Q: 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.
Question: How many years had the Astor Hotel been in business the year that Ciampa scaled the exterior of it? Passage 1:Edwin Bergstrom studied architecture at the Massachusetts Institute of Technology and at Yale University. He began his architectural practice in New York City in 1899 and then moved to Los Angeles in 1903. He partnered with John Parkinson soon after arriving in Los Angeles. After leaving the partnership with Parkinson, Bergstrom oversaw a successful solo practice. In the 1920s and 1930s, Bergstrom was associated with the Pasadena architectural firm of Bennett and Haskell. He won a design competition in 1923 to design the City of Pasadena Civic Auditorium, which anchors the south end of the city's civic center. In the late 1920s, Bergstrom was one of five prominent Los Angeles architects, organized as the Allied Architects of Los Angeles, involved in designing the Los Angeles County/USC Medical Center General Hospital (1933), an architectural monument in East Los Angeles. Bergstrom was commissioned as the chief consulting architect for the United States War Department in 1941. In this capacity, he served as the chief architect for the Pentagon in Washington, D.C. (1941–43). Bergstrom was also actively involved in the American Institute of Architects (AIA), serving as the national organization's treasurer for over 40 years and as president in 1939 and 1940. During their partnership, Parkinson & Bergstrom became the dominant architectural firm hired to design major buildings in Los Angeles. This prominent partnership designed over 25 buildings in the 10 years of their collaboration, with the majority located in the city's burgeoning downtown. Besides the Metropolitan Building, there are four other Parkinson & Bergstrom buildings located within the boundaries of the Broadway Commercial and Entertainment Historic District. As is evidenced in the Metropolitan Building, Parkinson & Bergstrom commercial buildings typically reflect influences of the Beaux Arts or Classical Revival styles popular at the turn of the century with exterior use of glazed terra cotta, decorative spandrel panels, low relief sculptural ornamentation, and large projecting cornices.
 Passage 2:On October 1, 2016, U.S. Customs and Border Protection officers detained and questioned Ou for more six hours in the Vancouver International Airport on his way to cover the Dakota Access Pipeline protests for the Canadian Broadcasting Corporation (CBC) as part of a project on Native American healthcare in North America. Ou's intended destination was Bismarck, North Dakota but, after passing through the initial security line at the airport, he was flagged by custom agents for secondary screening and pulled aside. They questioned his purpose for traveling to the United States and when he last visited Iraq, a routine experience for him as a journalist reporting in dangerous regions. He explained that he was on assignment as a photographer to cover the pipeline protests at Standing Rock for the CBC and that he had not been to Iraq in more than a year. He was then detained in a room where he was asked to provide details of his trips to every country he had visited in the last five years and all extremist groups he had come in contact with. Officials then requested that he unlock his three encrypted cell phones to search for images of him "posing with a dead body". After he refused to comply to protect his sources, they denied him entry into the United States, confiscated his phones and other materials, searched his checked baggage, and made photocopies of his reporter's notebook and personal diaries against his wishes. When his phones were returned to him, there was evidence of tampering with the SIM cards suggesting that copies of them may have been made. A border official later stated that his name matched a "person of interest" on an unspecified U.S. federal law enforcement watch list, however, no official reason was provided for his detention aside from it being "classified". Ou's travel rights into the United States have been revoked.
 Passage 3:A bricklayer by profession, Ciampa also worked in the entertainment business throughout the late 1940s and early 1950s, starring in Larry Sunbrock's Rodeo and Thrill Circus in New York City and then traveling with the circus to various U.S. and Canadian cities. Notably, his act did not include the typical, tightly choreographed feats of circus acrobatics such as trapeze swinging or trampolining, but rather improvised climbing and leaping stunts making use of scaffolding and circus rigging. Spectators were frequently alarmed by the apparently ad libbed and obviously dangerous nature of his performances. In 1947 Ciampa was arrested for having scaled the exterior of the Astor Hotel as a publicity stunt for the Sunbrock Circus, concerning onlookers who feared that he might have been attempting suicide. 

A:
3