Thread:Talk:SMWCon Fall 2016/Contributions/Incorrect number of contributions

The table shows the correct number of contributions (currently 5), but the summary figure at top shows 1 more (currently 6), because the base page SMWCon Fall 2016 also uses the conference template and also gets the Property:Has conference assigned. Is there a way to tell the query to exclude this page from the query result? Or otherwise, tell the page not to get this property?