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: Which river is longer, the river that drains the central portion of the county, or the river that drains the western portion? Passage 1:After the partition of Korea following the end of the Pacific War, the Kyŏngwŏn Line was split along the 38th parallel between the stations of Hantangang and Ch'osŏngri, and the Korean State Railway, established following the nationalisation of all railways in North Korea in 1946, merged the truncated Wŏnsan−Ch'osŏngri section of the Kyŏngwŏn Line with the Wŏnsan−Kowŏn section of the former Hamgyŏng Line to create the Kangwŏn Line. Following the end of the Korean War and the establishment of the Military Demarcation Line, the section south of Wŏljŏngri ended up in South Korea, where the Korean National Railroad reabsorbed it into the Kyŏngwŏn Line. The section from P'yŏnggang to Kagok has been closed since the end of the war, and since then the line has its current name, from the two termini: P'yŏnggang and Wŏnsan. The line was severely damaged during the Korean War, but was quickly repaired after the war. The Kowŏn−Sep'o Ch'ŏngnyŏn section of the line was electrified in September 1980, and the electrification of the Sep'o Ch'ŏngnyŏn−P'yŏnggang section was completed in early 1986.
 Passage 2:Duterte was born on March 28, 1945, in Maasin. His father was Vicente G. Duterte (1911–1968), a Cebuano lawyer, and his mother, Soledad Duterte (née Roa; 1916–2012), was a school teacher from Cabadbaran, Agusan and a civic leader of Maranao descent. Duterte's father was mayor of Danao, Cebu, and subsequently the provincial governor of (the then-undivided) Davao province. Rodrigo's cousin Ronald was mayor of Cebu City from 1983 to 1986. Ronald's father, Ramon Duterte, also held the position from 1957 to 1959. The Dutertes consider the Cebu-based political families of the Durano and the Almendras clan as relatives. Duterte also has relatives from the Roa clan in Leyte through his mother's side. Duterte's family lived in Maasin, and in his father's hometown in Danao, until he was four years old. The Dutertes initially moved to Mindanao in 1948 but still went back and forth to the Visayas until 1949. They finally settled in the Davao Region in 1950. Vicente worked as a lawyer engaged in private practice. Soledad worked as a teacher until 1952 when Vicente entered politics.
 Passage 3:The damming of the Hackensack River and a tributary, the Pascack Brook, produced three reservoirs in the county, Woodcliff Lake Reservoir (which impounds one billion gallons of water), Lake Tappan (3.5 billion gallons), and Oradell Reservoir, which allows United Water to provide drinking water to 750,000 residents of northern New Jersey, mostly in Bergen and Hudson counties. The Hackensack River drains the eastern portion of the county through the New Jersey Meadowlands, a wetlands area in the southern portion of the county. The central portion is drained by the Saddle River and the western portion is drained by the Ramapo River. Both of these are tributaries of the Passaic River, which forms a section of the southwestern border of the county.
3