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 a WYSIWYG Editor of no, and an Unread message tracking of session, and an Image attachment of no?
gpt
SELECT Calendar FROM table WHERE WYSIWYG Editor = no AND Unread message tracking = session AND Image attachment = no