Definition: 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.
Input: Question: Who did the communisits beat in the civil war in 1949? Passage 1:In ancient times the area around Changzhi (Including Jincheng) was known as Shangdang. Changzhi was the site of the Shangdang Campaign, the first battle between the Kuomintang and the People's Liberation Army after the end of World War II. The campaign began in August 1945 and lasted until October. It began when the local Shanxi warlord, Yan Xishan, attempted to retake the region from Communist forces. Yan's forces were eventually defeated by an army led by Liu Bocheng, who was later named one of China's Ten Great Marshals. Liu's political commissar was Deng Xiaoping, who later became China's "paramount leader". The campaign ended with the complete destruction of Yan's army, most of which joined the Communists after surrendering. Following the Shangdang Campaign, the Communists remained in control of the region until they won the civil war in 1949.
 Passage 2:Aurthur Frederick Hertz was born in Bradford to Fanny Mary and William Martin Hertz, a merchant of German Jewish descent. Hertz changed the spelling of his surname to Hurst in 1916. He attended Bradford Grammar School and Manchester Grammar School before graduating from Magdalene College, Oxford in 1904. He joined the staff of Guy's Hospital in 1906 and ran his own private practice before serving in World War I as a consulting physician stationed in Salonika. From 1916 to 1918, Hurst led the neurology department at Netley Hospital. Seale-Hayne College was repurposed as a military hospital that same year. Hurst moved there to help with treatment of shell shock, working at Netley until 1919. After the war, Hurst relocated his private practice to Windsor and retired in 1939. Upon his retirement, Hurst became a consulting physician and served on Guy's Hospital board of governors. Hurst was knighted in 1937 six years after his older brother Gerald Berkeley Hurst. He died in Birmingham in 1944, aged 65.
 Passage 3:Charbonneau began high school at Shaker High School before transferring to Shenendehowa High School before his junior year. In high school, he played soccer and ran track. Charbonneau attended Hartwick College, playing on the men's soccer team from 1973 to 1976. The Tampa Bay Rowdies selected him as the 71st pick of the 1977 NASL draft, but did not make the roster. He then joined the California Sunshine of ASL. In 1978, he signed with the Houston Hurricane of the NASL where he spent three seasons. That fall, he and much of the Hurricane roster was signed to form the core of the Houston Summitt of the MISL. He continued to play for the Hurricane during the summer and indoors with MISL teams during the winter. In 1979, he began the MISL season with the Pittsburgh Spirit before being traded to the Hartford Hellions. He spent 1981 back in the ASL with the New York Eagles. He also played the 1981–82 MISL season with the New Jersey Rockets.

Output:
1