Table schema:
CREATE TABLE candidates (candidate_id VARCHAR); CREATE TABLE people (person_id VARCHAR, email_address VARCHAR)

Question: Find id of the candidate whose email is stanley.monahan@example.org?
SQL: SELECT T2.candidate_id FROM people AS T1 JOIN candidates AS T2 ON T1.person_id = T2.candidate_id WHERE T1.email_address = "stanley.monahan@example.org"