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: Which country's air force was garrisoned at Taichung until 1955? Passage 1:During the mid-1960s, Fowley publicized/consulted singer P.J. Proby and relocated for a time to London, England. Fowley wrote the lyrics for the song "Portobello Road", the B-side of Cat Stevens' first single, "I Love My Dog". He produced a Them spin-off band led by two ex-Them members, brothers Pat and Jackie McAuley (who were only allowed to use the band name Other Them in the UK, but called themselves Them on the European continent, releasing an album called Them Belfast Gypsies and a single "Let's Freak Out" under the name Freaks of Nature); an early incarnation of Slade known as the N'Betweens; Soft Machine (he produced "Love Makes Sweet Music", their first single); and the Lancasters, an instrumental rock group featuring a young Ritchie Blackmore. He worked with an up-and-coming band, the Farinas, and renamed them "Family". 
 Passage 2:The song ranked in music charts even before its official release. The song peaked at #52 on the Billboard US Hot 100 and #54 on the Billboard Pop 100. Although the song is the band's first charting single on Modern Rock Tracks to not reach the #1 spot since "Pts.Of.Athrty" in 2002 stalled at #29, it did however hold the #2 spot on the chart for nine consecutive weeks then got replaced by Three Days Grace's Never Too Late at the #2 spot, being held off from the #1 spot by Foo Fighters' "The Pretender". It also reached #3 on the Mainstream Rock Tracks charts. In the UK, it debuted and peaked at #29. It made the top thirty in Australia, Canada, Poland and Israel. To date, it has been less successful than its predecessor "What I've Done" that debuted at #1 on the Modern Rock Tracks chart and the following single "Shadow of the Day" where both singles charted higher. However, it has peaked higher than "What I've Done" in the New Zealand Singles Chart (#7) and Belgian Singles Chart (#22). Additionally, it was more successful on the Mainstream Rock Tracks and the Modern Rock Tracks chart than the other singles from Minutes to Midnight staying at 36 weeks on the Modern Rock Tracks chart making it their third most successful single behind In The End (44 weeks) and Faint (37 weeks) on the rock charts.
 Passage 3:Taichung International Airport was constructed during the era of Japanese rule and was named . The United States Air Force (USAF) had been garrisoning the base with two fighter squadrons until the Sino-American Mutual Defense Treaty came into force on March 3, 1955. The airport then expanded in 1954 according to the Sino-American Mutual Defense Treaty, and later renamed Ching Chuan Kang Air Base (CCK) in memory of General Qiu Qingquan. In 1966 the American Air Force established a joint forces air-base at CCK. It was the largest air force base in the Far East at the time, allowing Boeing B-52 Stratofortress bombers to land. During the Vietnam War, CCK became a depot for the USAF. The US Military used CCK and Shuinan Airport to run many of its long-distance Vietnam, Cambodia and Laotian bombing, scouting and cargo transport runs during the Vietnam War era. This base was shut down and most American facilities were removed after U.S. established diplomatic relations with the China in 1979.

Solution:
3