user: Question: What kind of League has a Venue of Billesley Common?
Columns: ['Club', 'Sport', 'Founded', 'League', 'Venue']
Types: ['text', 'text', 'real', 'text', 'text']
Sample row: ['Aston Villa', 'Football', 1874.0, 'FA Premier League', 'Villa Park']
SQL:

assistant: SELECT "League" FROM "Table" WHERE "Venue" = 'Billesley Common';