Task: Text to Code
Input (English): Step 1: For each row in Campuses table, find the corresponding rows in faculty table.
Step 2: find County of the results of step 1 whose Campuses's Campus equals Los Angeles and faculty's Year greater than 1950
Output (English): SELECT T1.County FROM Campuses AS T1 JOIN faculty AS T2 ON T1.Id = T2.Campus WHERE T1.Campus = "Los Angeles" AND T2.Year > 1950