Show the manager name for gas stations belonging to the ExxonMobil company.
create table gas_station (manager_name varchar, station_id varchar, PRIMARY KEY (manager_name)); create table station_company (company_id varchar, station_id varchar, PRIMARY KEY (company_id)); create table company (company_id varchar, company varchar, PRIMARY KEY (company_id))
select t3.manager_name from station_company as t1 join company as t2 on t1.company_id = t2.company_id join gas_station as t3 on t1.station_id = t3.station_id where t2.company = 'exxonmobil'