user: ### NOW ANSWER:
Question: What is the number of clubs when Dalian Shide won and Sichuan Quanxing won 4th?
Columns: ['Season', 'Winners', 'Runners-up', 'Third-place', 'fourth-placed', 'Number of clubs']
Types: ['real', 'text', 'text', 'text', 'text', 'real']
Sample row: [1994.0, 'Dalian Wanda', 'Guangzhou Apollo', 'Shanghai Shenhua', 'Liaoning Yuandong', 12.0]
SQL:

assistant: SELECT AVG("Number of clubs") FROM "Table" WHERE "Winners" = 'Dalian Shide' AND "fourth-placed" = 'Sichuan Quanxing';