CREATE TABLE endowment (endowment_id DECIMAL, school_id DECIMAL, donator_name TEXT, amount DECIMAL)
CREATE TABLE budget (school_id DECIMAL, year DECIMAL, budgeted DECIMAL, total_budget_percent_budgeted DECIMAL, invested DECIMAL, total_budget_percent_invested DECIMAL, budget_invested_percent TEXT)
CREATE TABLE school (school_id TEXT, school_name TEXT, location TEXT, mascot TEXT, enrollment DECIMAL, ihsaa_class TEXT, ihsaa_football_class TEXT, county TEXT)

Show the names of donors who donated to both school 'Glenn' and 'Triton.
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'
SELECT "T1"."donator_name" FROM "endowment" AS "T1" JOIN "school" AS "T2" ON "T1"."school_id" = "T2"."school_id" AND "T2"."school_name" = 'Glenn' INTERSECT SELECT "T1"."donator_name" FROM "endowment" AS "T1" JOIN "school" AS "T2" ON "T1"."school_id" = "T2"."school_id" AND "T2"."school_name" = 'Triton'