Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_19744915_15 ( rank VARCHAR, couple VARCHAR )

### Question ###
What is Michael and Melanie's rank?

### Accurate SQL ###

SELECT rank FROM table_19744915_15 WHERE couple = "Michael and Melanie"