Table: shaun murphy (snooker player)
Question: What is the success rate of Shaun Murphy in various championships over the years?
Step 1 (Reasoning, Grounding): success rate, number of winning events divided by total events
Step 2 (Operation, Indexing): outcome
Step 3 (Operation, Grouping): the value of outcome
Step 4 (Reasoning, Aggregating): COUNT, outcome = winner
Answer: 0.5