Question: What is the Illustration with a Design of Tim Nokes, and a First Day Cover Cancellation with Calgary, Alberta?
SQL: SELECT "Illustration" FROM "2-11900773-6" WHERE "Design" = 'Tim Nokes' AND "First Day Cover Cancellation" = 'Calgary, Alberta';

Question: What is the Date of Issue with a Theme with Mental Health?
SQL: SELECT "Date of Issue" FROM "2-11900773-6" WHERE "Theme" = 'Mental Health';

Question: What is the Theme with a Design with Sputnik Design Partners?
SQL: SELECT "Theme" FROM "2-11900773-6" WHERE "Design" = 'Sputnik Design Partners';

Question: What is the Paper Type with a First Day Cover Cancellation with Ottawa, ON?
SQL: SELECT "Paper Type" FROM "2-11900773-6" WHERE "First Day Cover Cancellation" = 'Ottawa, ON';

Question: What is the Paper Type with an Illustration with Martin Dee, UBC Public Affairs?
SQL: SELECT "Paper Type" FROM "2-11900773-6" WHERE "Illustration" = 'Martin Dee, UBC Public Affairs';

Question: What is the Theme with a Paper Type of Tullis Russell Coatings, and a Date with Issue of 1 October 2008?
SQL: SELECT "Theme" FROM "2-11900773-6" WHERE "Paper Type" = 'Tullis Russell Coatings' AND "Date of Issue" = '1 October 2008';