user: Question: Tell me the song with year before 2013 and music director of Yuvan Shankar Raja and film of Billa II
Columns: ['Film', 'Song', 'Year', 'Music Director', 'Language']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['Aayutha Ezhuthu', '"Yakkai Thiri"', 2004.0, 'A. R. Rahman', 'Tamil']
SQL:

assistant: SELECT "Song" FROM "Table" WHERE "Year" < 2013.0 AND "Music Director" = 'Yuvan Shankar Raja' AND "Film" = 'Billa II';