user: Question: WHAT CHAMPION HAD Richmond River COURSE ON June 13?
Columns: ['YEAR', 'DATE', 'CHAMPION', 'BEAT', 'TIME', 'COURSE']
Types: ['real', 'text', 'text', 'text', 'text', 'text']
Sample row: [1831.0, 'Sep 9th', 'Charles Campbell', 'John Williams', 'NTT', 'Thames (Westminster to Hammersmith)']
SQL:

assistant: SELECT "CHAMPION" FROM "Table" WHERE "COURSE" = 'Richmond River' AND "DATE" = 'June 13';