Table: water resources management in costa rica
Question: What is the average ratio of surface runoff to evapotranspiration in Costa Rica?
Step 1 (Operation, Indexing): surface run off (km 3 / year)
Step 2 (Reasoning, Aggregating): AVG, surface run off (km 3 / year)
Step 3 (Reasoning, Aggregating): AVG, evapotranspiration (km 3 / year)
Step 4 (Reasoning, Arithmetic): /, ratio
Answer: 1.374