CREATE TABLE table_43394 ("Date" TEXT, "Tournament" TEXT, "Winning score" TEXT, "Margin of victory" TEXT, "Runner ( s ) -up" TEXT)

What is the margin of victory in a semgroup championship?
SELECT "Margin of victory" FROM table_43394 WHERE "Tournament" = 'semgroup championship'
SELECT "Margin of victory" FROM "table_43394" WHERE "Tournament" = 'semgroup championship'