human
Considering the provided database schema and associated query, produce SQL code to retrieve the answer to the query. 
###Database Schema: Flat, Threaded, User-selectable themes, Calendar, Image attachment, Unread message tracking, WYSIWYG Editor
###Question: Which Calendar has WYSIWYG Editor of yes and an Unread message tracking of yes?
gpt
SELECT Calendar FROM table WHERE WYSIWYG Editor = yes AND Unread message tracking = yes