Table: european_volleyball_league_results_2
Columns: rank
champion
runner_up
third_place
fourth_place
total

Question: What was the runner-up when champion is 0, 4th place is 0 and rank is 6?
SQL: SELECT "runner_up" FROM european_volleyball_league_results_2 WHERE "champion" = '0' AND "fourth_place" = '0' AND "rank" = 6

Question: What is the runner-up for rank of 7?
SQL: SELECT "runner_up" FROM european_volleyball_league_results_2 WHERE "rank" = 7

Question: What is the runner-up when the total is 5?
SQL: SELECT "runner_up" FROM european_volleyball_league_results_2 WHERE "total" = 5