user: ### NOW ANSWER:
Question: What is the Capacity of the Rainer Kraft's Stadium?
Columns: ['Team', 'Head Coach', 'City', 'Stadium', 'Capacity']
Types: ['text', 'text', 'text', 'text', 'real']
Sample row: ['VfR Aalen', 'Rainer Scharinger', 'Aalen', 'Städtisches Waldstadion', 11183.0]
SQL:

assistant: SELECT AVG("Capacity") FROM "Table" WHERE "Head Coach" = 'Rainer Kraft';