Context: CREATE TABLE students (student_id VARCHAR); CREATE TABLE addresses (city VARCHAR, address_id VARCHAR); CREATE TABLE people_addresses (address_id VARCHAR, person_id VARCHAR)
Question: Find distinct cities of address of students?
Answer: SELECT DISTINCT T1.city FROM addresses AS T1 JOIN people_addresses AS T2 ON T1.address_id = T2.address_id JOIN students AS T3 ON T2.person_id = T3.student_id