Table: university_networks
Columns: members
country
year_established
world_rank_by_the_wur_2013
world_rank_by_arwu_2013
world_rank_by_qs_2013

Question: What was the world rank by QS in 2013 for the University of Otago?
SQL: SELECT "world_rank_by_qs_2013" FROM university_networks WHERE "members" = 'University of Otago'

Question: What was the world rank by ARWU in 2013 of university whose world rank by QS in 2013 was 90th?
SQL: SELECT "world_rank_by_arwu_2013" FROM university_networks WHERE "world_rank_by_qs_2013" = '90th'

Question: What was the world rank by ARWU in 2013 of the University of Tübingen?
SQL: SELECT "world_rank_by_arwu_2013" FROM university_networks WHERE "members" = 'University of Tübingen'

Question: What was the world rank by THE-WUR in 2013 of the university whose world rank by QS in 2013 was 113th? 
SQL: SELECT "world_rank_by_the_wur_2013" FROM university_networks WHERE "world_rank_by_qs_2013" = '113th'