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.
Q: Question: How old was her fiance when Annie Laurie got engaged? Passage 1:Levin holds several patents in chip design and GPS-based authentication, and has published over 50 scientific papers and policy articles. His work has appeared in Foreign Affairs, Foreign Policy, HuffPost, Politico.com, and the Obama White House website. "How to Counter Fake News," an article Levin co-authored with former Governor of Maryland Martin O'Malley, was included in Foreign Affairs's "The Best of 2017" anthology. He has co-authored pieces on cybersecurity with retired General Wesley Clark, and with cybersecurity expert Dan E. Geer Jr.. He also wrote an article with former Under Secretary of Defense for Policy Michèle Flournoy that encourages the Federal Government to embrace practices that protect data and personal identity from the inside out. He recently collaborated with General H. Hugh Shelton and Stephen Ondra on a report that urges the Department of Defense to choose an open source electronic health record when reforming the Military Health System.
 Passage 2:Her singing career started by vocalising for two territory bands led by Dallas Bartley and Snookum Russell, on the Chitlin' Circuit. In 1945, she recorded a version of "Saint Louis Blues" with the Bartley led band for Cosmo Records. She relocated to New Orleans, Louisiana, and was engaged by Paul Gayten. In 1947, she was performing in concert in New Orleans with Gayten, when the latter asked the young Fats Domino to come and play "Swanee River Boogie" on stage. Recording for both the Regal and De Luxe labels between 1947 and 1950, Laurie sang on several sides backed by Gayten's orchestra. Her first success was with her version of "Since I Fell for You" (1947), of which recording studio owner Cosimo Matassa said: "Annie Laurie did the first really good record that I liked... [She] was just fantastic, I mean nobody will ever make another version like that." She followed its success up with "Cuttin' Out" (1949), "You Ought To Know" (1950), "I Need Your Love" (1950), "Now That You're Gone" (1950) and "I'll Never Be Free" (1950). Laurie also toured with Gayten's orchestra in 1951.
 Passage 3:Koreans in Vietnam is a community of Vietnam with a population of Korean expatriates along with Vietnamese citizens of Korean ancestry. The population initially came in a military capacity, fighting on both sides of the Vietnam War. After the end of the war, there was little Korean migration or tourism in Vietnam, until the rise of the South Korean economy and the decline of the North resulted in an influx of South Korean investors and North Korean defectors, as well as South Korean men seeking Vietnamese wives. As of 2011, according to statistics of South Korea's Ministry of Foreign Affairs and Trade, they numbered roughly eighty thousand people, making them the second-largest Korean diaspora community in Southeast Asia, after the Korean community in the Philippines, and the tenth-largest in the world. A more recent estimate from Vietnam Television says their population might be as large as 130,000.

A:
2