Table: boxing at the 2002 south american games
Question: What is the ratio of gold medals to total medals won by the top three countries combined?
Step 1 (Operation, Indexing): gold and total
Step 2 (Operation, Filter): rank	
Step 3 (Reasoning, Arithmetic): sum, top-3 gold and total
Step 4 (Reasoning, Arithmetic): divide, gold and total
Answer: 0.52