Show the names of companies and the number of employees they have
SELECT T3.Name ,  COUNT(*) FROM employment AS T1 JOIN people AS T2 ON T1.People_ID  =  T2.People_ID JOIN company AS T3 ON T1.Company_ID  =  T3.Company_ID GROUP BY T3.Name
SELECT T3.Name ,  COUNT(*) FROM employment AS T1 JOIN people AS T2 ON T1.People_ID  =  T2.People_ID JOIN company AS T3 ON T1.Company_ID  =  T3.Company_ID GROUP BY T3.Name
[{'Name': 'BP', 'COUNT(*)': 1}, {'Name': 'China Construction Bank', 'COUNT(*)': 1}, {'Name': 'Gazprom', 'COUNT(*)': 1}, {'Name': 'PetroChina', 'COUNT(*)': 1}, {'Name': 'Volkswagen Group', 'COUNT(*)': 1}]