user: Question: Who is the runner-up of the season with Tanel Sokk as the finals MVP and Alar Varrak as the champion's coach?
Columns: ['Season', 'Winner', 'Result', 'Runner-up', '1st of Regular Season', 'Record', "Champion's Coach", 'Finals MVP']
Types: ['text', 'text', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: ['1990–91', 'Tallinna Asto', '2–0', 'Baltika', 'Baltika', '18–4', 'Jaanus Levkoi', 'N/A']
SQL:

assistant: SELECT "Runner-up" FROM "Table" WHERE "Finals MVP" = 'Tanel Sokk' AND "Champion's Coach" = 'Alar Varrak';