user: Question: What is the highest round for the Minnesota Junior Stars (MJHL)?
Columns: ['Round', 'Player', 'Position', 'Nationality', 'College/Junior/Club Team (League)']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [2.0, 'Don McLean', 'Defense', 'Canada', 'Sudbury Wolves ( OHA )']
SQL:

assistant: SELECT MAX("Round") FROM "Table" WHERE "College/Junior/Club Team (League)" = 'Minnesota Junior Stars (MJHL)';