Table: liga_team
Columns: team
head_coach
city
stadium
capacity

Question: What is VFB Stuttgart II Team's Stadiuim?
SQL: SELECT "stadium" FROM liga_team WHERE "team" = 'vfb stuttgart ii'

Question: What is the Capacity of Ernst-Abbe-Sportfeld?
SQL: SELECT "capacity" FROM liga_team WHERE "stadium" = 'ernst-abbe-sportfeld'

Question: What is the Capacity of the Rainer Kraft's Stadium?
SQL: SELECT AVG("capacity") FROM liga_team WHERE "head_coach" = 'rainer kraft'