Table: efda_nations_cup
Columns: season
venue
teams
drivers
champion
second
third

Question: What country came in third when there were 13 teams in 1996?
SQL: SELECT "third" FROM efda_nations_cup WHERE "teams" = 13 AND "season" = 1996

Question: What is the sum of season when the venue was donington park, and Brazil came in second?
SQL: SELECT SUM("season") FROM efda_nations_cup WHERE "venue" = 'donington park' AND "second" = 'brazil'

Question: What is the average Season when the venue was circuit de nevers magny-cours, and Drivers was more than 30?
SQL: SELECT AVG("season") FROM efda_nations_cup WHERE "venue" = 'circuit de nevers magny-cours' AND "drivers" > 30