moustache_club_sponsor_for_groucho:
  sponsor_club: moustache_club
  sponsorable: groucho (Member)
boring_club_sponsor_for_groucho:
  sponsor_club: boring_club
  sponsorable: some_other_guy (Member)
crazy_club_sponsor_for_groucho:
  sponsor_club: crazy_club
  sponsorable: some_other_guy (Member)