Question: List all the themes designed by Isabelle Toussaint.
SQL: SELECT "Theme" FROM "1-11900773-6" WHERE "Design" = 'Isabelle Toussaint';

Question: How many paper types did Ian Drolet design stamps on?
SQL: SELECT COUNT("Paper Type") FROM "1-11900773-6" WHERE "Design" = 'Ian Drolet';

Question: Who is the designer of the Christmas: Winter Fun (USA) stamp?
SQL: SELECT "Design" FROM "1-11900773-6" WHERE "Theme" = 'Christmas: Winter Fun (USA)';

Question: How many stamps were designed for the theme of XII Summit de la Francophonie?
SQL: SELECT COUNT("Design") FROM "1-11900773-6" WHERE "Theme" = 'XII Summit de la Francophonie';

Question: Where is the first day cover cancellation for the 3 April 2008 IIHF World Championships, Quebec City stamp?
SQL: SELECT "First Day Cover Cancellation" FROM "1-11900773-6" WHERE "Date of Issue" = '3 April 2008' AND "Theme" = 'IIHF World Championships, Quebec City';