CREATE TABLE member (member_id NUMBER, name CLOB, country CLOB, college_id NUMBER)
CREATE TABLE college (college_id NUMBER, name CLOB, leader_name CLOB, college_location CLOB)
CREATE TABLE round (round_id NUMBER, member_id NUMBER, decoration_theme CLOB, rank_in_round NUMBER)

Show the distinct leader names of colleges associated with members from country 'Canada'.
SELECT DISTINCT T1.leader_name FROM college AS T1 JOIN member AS T2 ON T1.college_id = T2.college_id WHERE T2.country = "Canada"
SELECT DISTINCT "T1"."leader_name" FROM "college" "T1" JOIN "member" "T2" ON "Canada" = "T2"."country" AND "T1"."college_id" = "T2"."college_id"