Task: Question Understanding
Input (English): Context : On 4 November 2010, Qantas Flight 32, an Airbus A380 registered VH-OQA, fitted with four Trent 972 engines manufactured by Rolls-Royce, suffered an uncontained turbine disc failure of its left inboard engine shortly after taking off from Singapore Changi Airport en route to Sydney. 
Question : What is Qantas's parent company?
Output (English): parent company