Table: college_hockey_teams
Columns: institution
location_city
location_state
nickname
founded
affiliation
enrollment
primary_conference

Question: What city is Tiffin University located in?
SQL: SELECT "location_city" FROM college_hockey_teams WHERE "institution" = 'Tiffin University'

Question: What is the enrollment at the private university?
SQL: SELECT "enrollment" FROM college_hockey_teams WHERE "affiliation" = 'Private'