human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Year, Men's singles, Women's singles, Men's doubles, Women's doubles, Mixed doubles
###Question: Who won the Women's doubles in the year that Billy Gilliland Karen Puttick won the Mixed doubles?
gpt
SELECT Women's doubles FROM table WHERE Mixed doubles = billy gilliland karen puttick