What is the email of the student with first name "Emma" and last name "Rohan"?
SELECT email_address FROM Students WHERE first_name  =  "Emma" AND last_name  =  "Rohan"
email of the student refers to email_address; student with first name 'Emma' and last name 'Rohan' refers to WHERE first_name = 'Emma' AND last_name = 'Rohan';