CREATE TABLE table_47642 ("Year" FLOAT, "Championship" CLOB, "Winning score" CLOB, "Margin" CLOB, "Runner ( s ) -up" CLOB)

What is the winning score of the match with a margin of 3 strokes?
SELECT "Winning score" FROM table_47642 WHERE "Margin" = '3 strokes'
SELECT "Winning score" FROM "table_47642" WHERE "Margin" = '3 strokes'