Task: Text to Code
Input (English): Step 1: For each row in station_company table, find corresponding rows in company table and in gas_station table.
Step 2: find Location of the results of step 1 whose Sales_billion greater than 100
Output (English): SELECT T2.Location FROM company AS T1 JOIN gas_station AS T2 JOIN station_company AS T3 ON T1.Company_ID = T3.Company_ID AND T3.Station_ID = T2.Station_ID WHERE T1.Sales_billion > 100