user: Question: What is the Halil Mutlu when the world record is Olympic record and the 138kg is 305kg?
Columns: ['World record', 'Snatch', 'Halil Mutlu ( TUR )', '138kg', 'Antalya , Turkey']
Types: ['text', 'text', 'text', 'text', 'text']
Sample row: ['Clean & Jerk', 'Halil Mutlu ( TUR )', '168kg', 'Trenčín , Slovakia', '24 April 2001']
SQL:

assistant: SELECT "Halil Mutlu ( TUR )" FROM "Table" WHERE "World record" = 'Olympic record' AND "138kg" = '305kg';