user: Question: When Final is the open cup what is the league?
Columns: ['Year', 'Division', 'League', 'Regular Season', 'Playoffs', 'Open Cup']
Types: ['text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1989/90', 'N/A', 'SISL Indoor', '4th, Cactus', 'Did not qualify', 'N/A']
SQL:

assistant: SELECT "League" FROM "Table" WHERE "Open Cup" = 'Final';