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.
Q: Question: How old was King Henry IV when Heimburg Castle was built? Passage 1:On June 28, 2017, the Los Angeles Clippers acquired Williams, Patrick Beverley, Sam Dekker, Montrezl Harrell, Darrun Hilliard, DeAndre Liggins, Kyle Wiltjer, and a 2018 first-round pick from the Houston Rockets in exchange for Chris Paul. On November 27, 2017, Williams scored a season-high 42 points in a 120–115 win over the Los Angeles Lakers. On December 9, 2017, he hit a go-ahead pull-up 3-pointer with 1.2 seconds remaining, lifting the Clippers to a 113–112 victory over the Washington Wizards. He finished with 35 points to lead a dominant bench effort for the Clippers. On December 31, 2017, he scored 40 points off the bench in a 106–98 win over the Charlotte Hornets. Williams was subsequently named Western Conference Player of the Week for games played Monday, December 25 through Sunday, December 31. On January 10, 2018, he scored 27 of his career-high 50 points in the third quarter of the Clippers' 125–106 win over the Golden State Warriors. He shot 16 for 27 with a career-best eight 3-pointers and made all 10 of his free throws. It was the highest scoring effort by any Clipper in a single game since Charles Smith tied a franchise record with 52 points in December 1990. Williams was subsequently named Western Conference Player of the Week for games played Monday, January 8 through Sunday, January 14. On January 20, 2018, he recorded 31 points, a franchise-record 10 steals, and seven assists in a 125–113 loss to the Utah Jazz. He became the first player in league history to reach 30 points, 10 steals, and seven assists in a game since steals became a recorded stat. On January 26, 2018, he had 40 points and matched his season high with 10 assists in the Clippers' 109–100 victory over the Memphis Grizzlies. On February 7, 2018, he signed a multi-year contract extension with the Clippers. On February 23, 2018, he had 35 points in 33 minutes, including a 23-point second quarter, in a 128–117 win over the Phoenix Suns. Williams averaged career highs in points (22.6), assists (5.3), and minutes (32.8) during the 2017–18 season. His bench scoring led the NBA in his 13th season. He was subsequently named NBA Sixth Man of the Year for the second time in his career.
 Passage 2:After the deposition of the Saxon duke Henry the Lion in 1180, the Regenstein counts were temporarily arrested by the forces of Emperor Frederick Barbarossa, but were reconciled with the Hohenstaufen monarch soon after. After a lengthy feud Heimburg Castle, built about 1170 by King Henry IV and soon after devastated during the Saxon Rebellion, was acquired by the Regenstein counts in the early 14th century. The Regenstein-Heimburg branch re-united the Regenstein and Blankenburg estates in 1343, under the rule of the most renowned Count Albert II (1310–49), who since the 1330s was frequently in dispute with the leaders of the surrounding estates like the Halberstadt bishops and the Abbesses of Quedlinburg; he was finally assassinated by the henchmen of Bishop Albert II of Halberstadt. These tales were romanticised in the ballad The Robber Count () by Gottfried August Bürger, melodized by Johann Philipp Kirnberger and the novel of the same name by Julius Wolff.
 Passage 3:The song's music video was directed by Hype Williams and shot in black-and-white in Golden Beach, Florida at a beach front manse. The visual features scenes of the pair singing the song together. "Drunk in Love" was performed by Beyoncé and Jay-Z at the 56th Annual Grammy Awards. It was later added to the set lists of the second European leg of Beyoncé's The Mrs. Carter Show World Tour in 2013 and the pair's joint On the Run Tour in 2014. Numerous remixes and cover versions of the song were made, most notably the official rework by rapper Kanye West. The music video won Best Collaboration and was nominated for Video of the Year at the 2014 MTV Video Music Awards.

A:
2