Given the task definition and input, reply with output. 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 members did the United Australia Party have when MacDonald was elected to the Senate to represent them? Passage 1:MacDonald was involved in raising funds for the Nationalist Party from 1925 and by 1930 was its general secretary in Western Australia. He was elected to the Senate at the 1934 election, representing the United Australia Party, although he took his seat early in March 1935, filling a casual vacancy. He was minister without portfolio assisting the Minister for Commerce from November 1937 to November 1938 and then assisting the Treasurer until April 1939. Due to his support for Billy Hughes for the leadership after the death of Joseph Lyons, MacDonald was left out of Robert Menzies' ministries. He lost his seat at the September 1946 election, with his term finishing in June 1947. He failed to get Liberal Party endorsement for the December 1949 election.
 Passage 2:On March 27, 2010, Evans made his debut for Ring of Honor (ROH), working in a dark match, where he, David E. Jones and Ryan Stone were defeated by Johnny Goodtime, Johnny Yuma and Mike Sydal. On January 22, 2011, Evans, under the ring name "Barrister" R.D. Evans, made his television debut at the Ring of Honor Wrestling tapings, where he was unveiled as one of the new members of Prince Nana's The Embassy stable. Though he has not wrestled a single match for ROH since his dark match, Evans has been a part of several storylines involving The Embassy, including filing a lawsuit against Homicide, accusing him of attempted murder, assault and battery, attempted sexual assault and battery, sexual harassment and intentional infliction of emotional distress, and making various business deals for the stable, including one that resulted in its name being changed to The Embassy Limited, all with a goal of making Tommaso Ciampa a champion. However, after Prince Nana struck a deal with Truth Martini and cost Ciampa his match for the ROH World Television Championship against House of Truth member Roderick Strong, Ciampa turned on Nana at the June 29 tapings of Ring of Honor Wrestling, dissolving The Embassy Limited and making Evans his new primary manager. Evans continued managing Ciampa until August, when Ciampa was sidelined with a torn anterior cruciate ligament (ACL).
 Passage 3:Smith was born April 30, 1945, in Beaufort, North Carolina. He graduated from East Carteret High School in 1963, and went on to receive a Bachelor of Science degree in Naval Science from the United States Naval Academy in 1967. He subsequently attended the U.S. Naval Postgraduate School at Monterey, California, from which he graduated with a Master of Science degree in Aeronautical Engineering in 1968. He completed naval aviation jet training at Naval Air Station Kingsville, Texas, receiving his aviator wings in May 1969. He was then assigned to the Advanced Jet Training Command (VT-21) where he served as an instructor from May 1969 to March 1971. During the 2-year period that followed, he flew A-6 Intruders and completed a tour in 1972 during the Vietnam War while assigned to Attack Squadron 52 (VA-52) aboard the aircraft carrier . During his deployment with VA-52, Smith took part in Operation Linebacker, the first continuous bombing effort conducted against North Vietnam since 1968.
1