CREATE TABLE table_71159 ("Margin" FLOAT, "Score" TEXT, "Opponent" TEXT, "Venue" TEXT, "Year" FLOAT)

Name the opponent for 1996 at the mt smart stadium venue
SELECT "Opponent" FROM table_71159 WHERE "Venue" = 'mt smart stadium' AND "Year" = '1996'
SELECT "Opponent" FROM "table_71159" WHERE "Venue" = 'mt smart stadium' AND "Year" = '1996'