How many "account representatives" are there in Chicago with a good performance?
account representatives is a position title; Chicago refers to locationcity = 'Chicago'; good performance refers to performance = 'Good'
SELECT COUNT(*) FROM employee AS T1  INNER JOIN location AS T2  ON T1.locationID = T2.locationID INNER JOIN position AS T3  ON T3.positionID = T1.positionID WHERE T3.positiontitle = 'Account Representative' AND T2.locationcity = 'Chicago' AND T1.performance = 'Good'
database name:db_id human_resources
location table location Cols: location id dtype integer, location city dtype text, address dtype text, state dtype text, zip code dtype integer, office phone dtype text, 
position table position Cols: position id dtype integer, position title dtype text, education required dtype text, minimum salary dtype text, maximum salary dtype text, 
employee table employee Cols: social security number dtype text, last name dtype text, first name dtype text, hire date dtype text, salary dtype text, gender dtype text, performance dtype text, position id dtype integer, location id dtype integer, 
