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: Was the Belgian Labour Party socialist? Passage 1:Jarrett's career began in South Florida, where he was a successful stage and commercial actor and print model. His first feature film role was in the teen comedy "Summer Job", where he played an effete hairdresser. Next came minor roles in such films as The Bodyguard with Kevin Costner and Whitney Houston as well as Miami Vice and Unsolved Mysteries. Jarrett also hosted several nationally syndicated television shows, such as "Flight," "American Automotive," and "Better Farming" for SportsChannel America, as well as an exercise video with world championship boxer Alexis Arguello called "Boxercise." In 1992, Jarrett journeyed to Los Angeles and turned his attention to screenwriting. His original screenplay Laws of Deception was made into a film in 1997 and starred C. Thomas Howell, James Russo and Brian Austin Green and was directed by Joey Travolta, brother of John Travolta. Jarrett had a small role in this film as Mr. Farina, a corrupt businessman. Another original script entitled American Vampire was produced and starred Carmen Electra, Sydney Lassick, and Adam West. It was Carmen Electra's first feature. In 2003, Jarrett appeared as a contestant on the brainy television game show Jeopardy! as Rollin Jewett. In 2004, Jarrett was commissioned by Scott Reeves and Aaron Benward, the popular country music duo known as Blue County, to write a script in which they were to costar as brothers in a fictional place called Blue County. As the duo's music became more popular, the film was postponed and Benward and Reeves used the name for their band, which is still touring today. In 2017, his feature screenplay "Demons 4 Dummies" was a finalist in the Final Draft Big Break Screenwriting Contest.
 Passage 2:Walter was born in Kansas City, Missouri, United States, in 1910. His ancestry was German/British on his father's side, and American/British on his mother's side. He was brought to England in 1915, and educated at Westminster School and afterwards in King's College, Cambridge, in 1931. He failed to obtain a research fellowship in Cambridge and so turned to doing basic and applied neurophysiological research in hospitals, in London, from 1935 to 1939 and then at the Burden Neurological Institute in Bristol, from 1939 to 1970. He also carried out research work in the United States, in the Soviet Union and in various other places in Europe. He married twice, had two sons from his first marriage, and one from the second. According to his eldest son, Nicolas Walter, "he was politically on the left, a communist fellow-traveller before the Second World War and an anarchist sympathiser after it." Throughout his life he was a pioneer in the field of cybernetics. In 1970, he suffered a brain injury in a motor scooter accident. He never fully recovered and died seven years later, on May 6, 1977.
 Passage 3:Achille Honoré Van Acker was born into a working class family in Bruges, Belgium in 1898 as the youngest of 12 children. He only attended school until the age of 11. Despite entering the workforce, Van Acker read widely and joined several social associations in Bruges. At the outbreak of World War I, he was refused by the Belgian Army because he suffered from astigmatism. While the Germans occupied most of Belgium, Van Acker fled into the small section of unoccupied territory behind the Yser Front where he worked in various menial capacities. Mixing with Belgian soldiers during the war, Van Acker became involved in socialist politics, developing a distinctive ideology based on moderate social democracy. After the end of the war, he returned to Bruges and joined the Belgian Labour Party (Belgische Werkliedenpartij, POB–BWP) and became active in socialist groups, trade unions, and cooperatives.
3