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: At what age did Craig Fairbrass return to EastEnders as an antagonist? Passage 1:Fred Trump was one of the biggest real estate developers in New York. Using their inheritance, Fred and his mother Elizabeth founded E. Trump & Son. Fred married Mary MacLeod (1912–2000), a native of Tong, a small village near Stornoway, in the Western Isles of Scotland. She was the daughter of fisherman Malcolm MacLeod and Mary MacLeod (née Smith). At age 17, she immigrated to the United States and started working as a maid in New York. Fred and Mary met in New York and married in 1936, settling together in Queens. Mary became a U.S. citizen in 1942. Fred was the father of the businessman Donald Trump, who became president of the real estate company in 1971, and renamed it the Trump Organization. Donald Trump has said that he is "proud" of his German heritage, having served as grand marshal of the 1999 German-American Steuben Parade in New York City. While walking through the city and seeing Trump Tower, Donald Trump recalled saying: "This is a long way from Kallstadt."
 Passage 2:Dan Sullivan is a fictional character from the BBC soap opera EastEnders, played by Craig Fairbrass. Dan appeared on the show as a regular from 7 June 1999 to 10 July 2000 before returning as one of the show's primary antagonists from 26 February to 16 August 2001. He became central to a storyline involving a love triangle between himself, his lover Carol Jackson (Lindsey Coulson), and her daughter Bianca (Patsy Palmer) — whom Dan embarks on an affair with. Soon afterwards, the character developed an intense feud with local hardman Phil Mitchell (Steve McFadden); the pair started out as best-friends, but ended up becoming archenemies after Phil conned Dan's ownership of The Queen Victoria public house. During the course of their escalating rivalry, Dan become a prime suspect in Phil's shooting after the latter gets shot on the night their ex-lover Mel Healy (Tamzin Outhwaite) married Dan and Phil's fellow nemesis Steve Owen (Martin Kemp). Although Mel's best-friend and Phil's ex-girlfriend Lisa Shaw (Lucy Benjamin) was revealed to be the shooter, Phil ended up framing Dan for the crime - which leads to Dan being wrongfully imprisoned prior to his trial in mid-summer 2001; the trial culminated with Dan being found not guilty, and the character then departed the show after kidnapping Mel and holding her ransom to get revenge on Phil and Steve for conspiring to get him sent down.
 Passage 3:Selling studied mathematics at the Universities of Göttingen and Munich (under Philipp Ludwig von Seidel). He obtained the doctorate in Munich in 1859, under the supervision of Bernhard Riemann. On recommendation of Leopold Kronecker he became professor extraordinarius of mathematics at the University of Würzburg in 1860 – against the will of the philosophical faculty and the mathematics professor Aloys Mayr. There, he also taught astronomy and became conservator-restorer at the astronomical department in 1879. In 1873 he wrote an important paper on binary and ternary quadratic forms which was also translated into French and cited by Henri Poincaré, Émile Picard and Paul Gustav Heinrich Bachmann. Beginning with 1877 he also became concerned with insurance, and participated in the reorganization of the pensions in Bavaria on behalf of the Bavarian government. His application for a promotion to professor ordinarius was declined in 1891. In 1906 he became emeritus.
2