Database: company_office
Question: Which building has the largest number of company offices? Give me the building name.
SQL:
SELECT T2.name FROM Office_locations AS T1 JOIN buildings AS T2 ON T1.building_id  =  T2.id JOIN Companies AS T3 ON T1.company_id  =  T3.id GROUP BY T1.building_id ORDER BY COUNT(*) DESC LIMIT 1