Table schema:
CREATE TABLE Addresses (address_id VARCHAR, zip_postcode VARCHAR); CREATE TABLE Teachers (email_address VARCHAR, address_id VARCHAR)

Question: What are the email addresses of teachers whose address has zip code "918"?
SQL: SELECT T2.email_address FROM Addresses AS T1 JOIN Teachers AS T2 ON T1.address_id = T2.address_id WHERE T1.zip_postcode = "918"