CREATE TABLE table_35904 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

On what Date was Patty Sheehan Runner(s)-up?
SELECT "Date" FROM table_35904 WHERE "Runner(s)-up" = 'patty sheehan'
SELECT "Date" FROM "table_35904" WHERE "Runner(s)-up" = 'patty sheehan'