What is the number of staterooms when guests was larger than 210?
CREATE TABLE table_name_28 (staterooms INTEGER, guests INTEGER)
SELECT AVG(staterooms) FROM table_name_28 WHERE guests > 210
### Context: CREATE TABLE table_name_28 (staterooms INTEGER, guests INTEGER) ### Question: What is the number of staterooms when guests was larger than 210? ### Answer: SELECT AVG(staterooms) FROM table_name_28 WHERE guests > 210