Task: Text to Code
Input (English): Step 1: For each row in Office_locations table, find corresponding rows in buildings table and in Companies table.
Step 2: find the number of rows of each value of Headquarters in the results of step 1.
Step 3: find buildings's name of the results of step 1 with largest value in the results of step 2
Output (English): SELECT T1.name FROM buildings AS T1 JOIN Companies AS T2 JOIN Office_locations AS T3 ON T1.id = T3.building_id AND T3.company_id = T2.id GROUP BY T2.Headquarters ORDER BY Count ( * ) Desc LIMIT 1