Task: Question Answering
Input (English): Passage: On March 14, 1913, the Indiana General Assembly adopted "On the Banks of the Wabash, Far Away" as the official state song. The song's lyrics and required uses were added to the Indiana Code. The state song was the first official symbol of Indiana, adopted four years before the state flag. In 1925 Indiana General Assembly passed legislation that required Indiana's public school teachers to teach the song as part of their curriculum. That same year the New York Times reported that 20,000 copies of the song were distributed to the state's public school teachers. The song is often played at major sporting events, including the Indianapolis 500.Although "On the Banks of Wabash, Far Away" is Indiana's official song, "Back Home Again in Indiana" is more widely used and is falsely believed by many to be the state song. One of the leading causes of the state song's fall into obscurity was a change in its use at the Indianapolis 500 during the 1940s. "On the Banks of the Wabash, Far Away" is played at the event as the race cars move into their starting positions, a period that receives little television coverage, while "Back Home Again in Indiana" is sung just before the start of the race and is broadcast publicly. The change to singing "Back Home Again in Indiana" at public events continued in the following years, and it is often played in the place of "On the Banks of the Wabash, Far Away" at state college football games and other prominent events. In 1997, to commemorate the song's centennial anniversary, the Indiana General Assembly passed a resolution reconfirming "On the Banks of the Wabash, Far Away" as the state's official song and urged state institutions to make more use of it and return it to popularity. 
Question: In what year did the song that was adopted as the state song of Indiana get reconfirmed?
Output (English): 1997.