Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_name_31 (adelaide VARCHAR, perth VARCHAR, sydney VARCHAR, melbourne VARCHAR)
### Question:
Which Adelaide has Sydney yes, Melbourne yes, and Perth no?
### Answer:
SELECT adelaide FROM table_name_31 WHERE sydney = "yes" AND melbourne = "yes" AND perth = "no"