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: What was John Holt's career? Passage 1:Youth activism as a social phenomenon in the United States truly became defined in the mid- to late-nineteenth century when young people began forming labor strikes in response to their working conditions, wages, and hours. Mary Harris "Mother" Jones organized the first youth activism in the U.S., marching 100,000 child miners from the coal mines of Pennsylvania to the U.S. Capitol in Washington, D.C. in 1908. Youth newspaper carriers soon followed. These actions isolated youths' interests in the popular media of the times, and separated young people from their contemporary adult labor counterparts. This separation continued through the 1930s, when the American Youth Congress presented a "Bill of Youth Rights" to the US Congress. Their actions were indicative of a growing student movement present throughout the US from the 1920s through the early 1940s. The 1950s saw the Student Nonviolent Coordinating Committee bring young people into larger movements for civil rights. All the way back in 1959, Rev. Dr. Martin Luther King, Jr. engaged youth activists in protesting against Bull Connor's racist law enforcement practices in Birmingham, Alabama. The youth activism of Tom Hayden, Keith Hefner and other 1960s youth laid a powerful precedent for modern youth activism. John Holt, Myles Horton and Paulo Freire were important in this period. Youthful life and expression defined this era.
 Passage 2:Claire Porter was born in New Britain, Connecticut, where, as a child, she was a star athlete and danced in a local studio. After she earned her BA in Mathematics from the College of New Rochelle in New York, she became a computer programmer for G.E. Analytical Engineering in Schenectady, New York. Porter returned to her dancing roots after witnessing a performance by Maria Tallchief. She then attended Sonoma State University in California from 1969-1973. At Sonoma State, she studied dance, taught Family Dance, Exercise, and Children’s Dance, and directed a dance company of 12 members. Porter eventually moved from California to Ohio to study dance at Ohio State University. It was there that Porter discovered Laban Movement Analysis and began exploring gestures, acting, writing, and voice. She later received her certification for Laban Movement Analysis at the Laban/Bartenieff Institute of Movement Studies NYC. She earned her MA in Dance from Ohio State and has continued the exploration of gestural movement as a teacher, choreographer and performer.
 Passage 3:Hella Kemper (born 2 February 1959 in Gummersbach) known by her stage name Hella von Sinnen (lit. Hella out of [her] mind, making pun of the aristocratic von) is a German entertainer. She had several TV shows on German private channels (mainly RTL Group). Since the show's first air date on 11 January 2003, she has formed (until 2011 together with Bernhard Hoëcker and since 2017 with Wigald Boning) the two permanent panel members of the award-winning weekly Sat.1 improvisational comedy show Genial daneben (lit. ingeniously off the mark) presented by her main TV partner Hugo Egon Balder. In this show, von Sinnen, Hoëcker and three varying comedians try to answer strange questions sent in by the audience. Since 2018 she is a panel member at the spin-off Genial Daneben - Das Quiz. Her stage name is a pun on the German von preposition denoting noble descent; von Sinnen is a German expression for mad or insane.

A:
1