CREATE TABLE table_70394 ("Overall place" TEXT, "Yacht name" TEXT, "Skipper" TEXT, "Points" TEXT, "Combined elapsed time" TEXT)

Which Combined elapsed time has a Skipper of stephen wilkins?
SELECT "Combined elapsed time" FROM table_70394 WHERE "Skipper" = 'stephen wilkins'
SELECT "Combined elapsed time" FROM "table_70394" WHERE "Skipper" = 'stephen wilkins'