Table: nebraska_sports_teams
Columns: club
sport
league
titles
founded

Question: Which Founded has a Club of tri-city storm and a Titles larger than 1?
SQL: SELECT SUM("founded") FROM nebraska_sports_teams WHERE "club" = 'tri-city storm' AND "titles" > 1

Question: Which Founded that has a Club of no coast derby girls?
SQL: SELECT "founded" FROM nebraska_sports_teams WHERE "club" = 'no coast derby girls'

Question: Which Founded  has a League of women's flat track derby association, and a Club of omaha rollergirls?
SQL: SELECT AVG("founded") FROM nebraska_sports_teams WHERE "league" = 'women''s flat track derby association' AND "club" = 'omaha rollergirls'