Detailed Instructions: 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.
Problem:Question: Which person that Roberts filled in for on occasion is older? Passage 1:In 1979, he branched out from his radio work to co-host with Jeanne Beker the music newsmagazine The NewMusic on CITY-TV until 1985. The New Music was a pioneering program that pre-dated MTV. Roberts, Beker and the New Music team won many awards for their work. During that time, Roberts also served as Entertainment reporter for CITY-TV and on occasion filled in for John Majhor and later Brad Giffen on CITY-TV's local music video show Toronto Rocks. In 1984, Roberts was tapped to front Canada's music channel MuchMusic. He and Christopher Ward were the first on-air personalities appearing when the network launched in 1984. At MuchMusic he hosted many programs, including a one-hour heavy metal video show called The Power Hour.
 Passage 2:Kreider (sometimes with his wife, Eleanor) has given the Staley Lectures at Goshen College (1987 and 2001), the Laing Lecture at London Bible College (1994), the Tyndale Christian Doctrine Lecture at the Tyndale Fellowship, Cambridge (1996), the Schrag Lectures and Sider Peace Lectures at Messiah College, Pennsylvania (2001, 2007), the Menno Simons Lectures at Bethel College, Kansas (2001), the Believers Church Lectures at Fresno Pacific University, California, (2002), the Athol Gill Memorial Lecture at Whitley College, Melbourne, Australia (2005), the Annual Lecture at the Macquarie Christian Studies Institute, Sydney (2005), and the Augsburger Mission Lectures at Eastern Mennonite University (2012). He has spoken at the Wheaton College (Illinois) Theology Conference (2007), the Calvin Theological Seminary Symposium on Worship (2011), Tyndale University College and Seminary and Wycliffe College, Toronto (2011). He has been Senior Mission Scholar in Residence at the Overseas Ministries Study Center, New Haven, Connecticut (2005).
 Passage 3:In 1939, Barry joined the Australian Labor Party and ran, unsuccessfully, for the federal seat of Balaclava in the electoral year of 1943. However, he later became a member of the Victorian central executive in 1945–47, as well as becoming a member of the Overseas Telecommunications Commission in 1946-47. He was also elected chairman of the ethics committee of the Australian Journalists' Association, after becoming a member in 1943. Appointed as a King's Counsel (now known as the Senior Counsel) in 1942, Barry assisted Sir Charles Lowe in the inquiry into the Darwin air raids. Representing the politician, Eddie Ward in a royal commission into the Brisbane Line, Barry was appointed commissioner to investigate the suspension of government in Papua New Guinea.

Solution:
1