user: Question: In which season is the runner-up Lase-R/Riga?
Columns: ['Season', 'Winner', 'Runner-up', 'Final Score', '3rd place']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['2005–06', 'Biolars Ozolnieki', 'Pere Leib Tartu', '3 : 1', 'SK Riga/ LU Inčukalns']
SQL:

assistant: SELECT "Season" FROM "Table" WHERE "Runner-up" = 'Lase-R/Riga';