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

Question: What is the zip code of the address where the teacher with first name "Lyla" lives?
SQL: SELECT T1.zip_postcode FROM Addresses AS T1 JOIN Teachers AS T2 ON T1.address_id = T2.address_id WHERE T2.first_name = "Lyla"