user: Question: What's the lowest highest capacity that has a lowest capacity larger than 4086 people, and a current capacity of 14209, and an average capacity smaller than 8530?
Columns: ['Team', 'Stadium', 'Capacity', 'Lowest', 'Highest', 'Average']
Types: ['text', 'text', 'real', 'real', 'real', 'real']
Sample row: ['Celtic', 'Celtic Park', 60832.0, 45000.0, 60000.0, 56676.0]
SQL:

assistant: SELECT MIN("Highest") FROM "Table" WHERE "Lowest" > 4086.0 AND "Capacity" = 14209.0 AND "Average" < 8530.0;