CREATE TABLE table_27484208_1 (world_rank_by_qs_ VARCHAR, _2013 VARCHAR, members VARCHAR)

What was the world rank by QS in 2013 for the University of Otago?
SELECT world_rank_by_qs_, _2013 FROM table_27484208_1 WHERE members = "University of Otago"
SELECT "world_rank_by_qs_", "_2013" FROM "table_27484208_1" WHERE "University of Otago" = "members"