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.
Input: Question: In which country was Robert Fraser's brother an Emeritus Professor of Opera? Passage 1:The Victor Emmanuel Railway, which included both the Culoz–Modane railway across Savoy and the Turin–Modane railway across Piedmont, was largely built in the 1850s by the Kingdom of Sardinia and named after its king, Victor Emmanuel II. Until 1860 Sardinia included both Savoy and Piedmont. The line from Turin to Susa was inaugurated on 22 May 1854. Work on the tunnel began on 31 August 1857 and was completed in September 1871. Work had begun on the line between Bussoleno and Bardonecchia in 1867 and was completed at the same time as the tunnel. The tunnel and line were opened on 16 October 1871. By that time, the Savoy side of the tunnel had become part of France. The decision of the engineers to begin the line at Bussoleno in order to reduce the gradient on the climb near Meana was much criticized for bypassing the city of Susa, which was left isolated on a short branch line. The opening of the tunnel also led to the closure of the short-lived Mont Cenis Pass Railway. In 1865 the line became part of the network of the Società per le strade ferrate dell'Alta Italia (Upper Italian Railways, SFAI) on its foundation in 1865 and was taken over by the Rete Mediterranea (Mediterranean Network) in 1885. Finally in 1905 it became part of the Ferrovie dello Stato network.
 Passage 2:"Learn the Hard Way" is the album's fourth track. It is the third song on the album, and shares similarities with the song "Never Say Never". The Guy Roche-produced "Almost Doesn't Count" is the fifth track. Brandy performed the song in the 1999 film Double Platinum, starring Diana Ross and herself. The international single "Top of the World" is the album's sixth track. It is a collaboration with Mase and the song talks about Brandy as a popstar just trying to be her and not feeling like being in her own world. In the music video, directed by Paul Hunter, Brandy was featured incurring various supernatural phenomena. She spontaneously floated in the air, flipping and somersaulting above random objects; telephone poles and vehicles, as people stopped to stare. These strange phenomena also included balancing herself vertically and horizontally alongside skyscrapers and buildings. The Darkchild-produced "U Don't Know Me (Like U Used To)", which is the album's seventh and final single, is noted for its remix version with Shaunta and Da Brat. The remix was released as the lead single to the same-named EP. "Never Say Never", also produced by Rodney Jerkins, is the eighth song of the album. "Never Say Never" was released as a Germany single in 2000. "Truthfully", a ballad about a broken relationship, was penned by former Boyz II Men member, singer-songwriter Marc Nelson. Recorded in a single take, it took Nelson five different sessions to get Norwood in the recording studio as she felt initially nervous about working with him. Main production on the song was helmed by Harvey Mason, Jr. who received his first major placement as a producer on "Truthfully". Mason was consulted by Jerkins after he had shopped around several tracks for record executives.
 Passage 3:Fraser was born on 10 May 1947 in Surbiton, Surrey, the second son of Harry MacKenzie Fraser, a London solicitor, and Ada Alice Gittins of Pontypool in the county of Monmouthshire. His brother was Malcolm Fraser (1939–2012), Emeritus Professor of Opera at the University of Cincinnati and co-founder of the Buxton Festival. At the age of eight, Robert Fraser won a choral scholarship to Winchester Cathedral, where he sang the daily services while studying at the Pilgrims School in the Close. Among his fellow choristers were the future newscaster Jon Snow and international tenor Julian Pike. After attending Kingston Grammar School Fraser went on to the University of Sussex to read English with David Daiches and Anthony Nuttall. He later wrote a doctorate on tradition in English poetry at Royal Holloway, University of London where the college's famous gallery of Victorian paintings was to inspire his illustrated volume of poetry The Founders’ Gift: Impressions from a Collection (2017). Simultaneously with his doctorate he studied Harmony, Counterpoint and Composition at Morley College with Melanie Daiken and James Iliff.

Output:
3