Table: basketball_championship
Columns: season
winner
result
runner_up
1st_of_regular_season
record
champion_s_coach
finals_mvp

Question: Who is the runner-up of the season with Tanel Sokk as the finals MVP and Alar Varrak as the champion's coach?
SQL: SELECT "runner_up" FROM basketball_championship WHERE "finals_mvp" = 'tanel sokk' AND "champion_s_coach" = 'alar varrak'