Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE table_29536 ( "Members" text, "Country" text, "Year Established" real, "World Rank by THE-WUR , 2013" text, "World Rank by ARWU , 2013" text, "World Rank by QS , 2013" text )

### Question ###
What was the world rank by QS in 2013 for the University of Otago?

### Accurate SQL ###

SELECT "World Rank by QS , 2013" FROM table_29536 WHERE "Members" = 'University of Otago'