user: Question: What is the lowest defense a champion with 345 days held has?
Columns: ['Name', 'Reign', 'Days held', 'Location', 'Defenses']
Types: ['text', 'real', 'text', 'text', 'real']
Sample row: ['Charles C. Smith', 1.0, 'Unknown', '—', 0.0]
SQL:

assistant: SELECT MIN("Defenses") FROM "Table" WHERE "Days held" = '345';