CREATE TABLE school (school_id VARCHAR(255), school_name VARCHAR(255)); CREATE TABLE endowment (donator_name VARCHAR(255), school_id VARCHAR(255))
Show the names of donors who donated to both school "Glenn" and "Triton."
    
SQL: 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'