Show the names of donors who donated to both school "Glenn" and "Triton."
create table school (school_id varchar, school_name varchar, PRIMARY KEY (school_id)); create table endowment (donator_name varchar, school_id varchar, PRIMARY KEY (donator_name))
select t1.donator_name from endowment as t1 join school as t2 on t1.school_id = t2.school_id where t2.school_name = 'glenn' intersect select t1.donator_name from endowment as t1 join school as t2 on t1.school_id = t2.school_id where t2.school_name = 'triton'