CREATE TABLE table_370 ("Date of Issue" TEXT, "Theme" TEXT, "Denomination" TEXT, "Design" TEXT, "Illustration" TEXT, "Printing Process" TEXT, "Paper Type" TEXT, "First Day Cover Cancellation" TEXT)

Where is the first day cover cancellation for the 3 April 2008 IIHF World Championships, Quebec City stamp?
SELECT "First Day Cover Cancellation" FROM table_370 WHERE "Date of Issue" = '3 April 2008' AND "Theme" = 'IIHF World Championships, Quebec City'
SELECT "First Day Cover Cancellation" FROM "table_370" WHERE "Date of Issue" = '3 April 2008' AND "Theme" = 'IIHF World Championships, Quebec City'