user: Question: What's the snatch when the 139kg was 305kg and the Olympic record was the world record?
Columns: ['World record', 'Snatch', 'Mu Shuangshuang ( CHN )', '139kg', 'Doha , Qatar']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Clean & Jerk', 'Tang Gonghong ( CHN )', '182kg', 'Athens , Greece', '21 August 2004']
SQL:

assistant: SELECT "Snatch" FROM "Table" WHERE "World record" = 'Olympic record' AND "139kg" = '305kg';