SlaveBreedRegulator:
  type: world
  events:
    on villager breeds:
      - if <cu@3704,68,-3731,earth_1|3692,61,-3743,earth_1.contains_location[<villager.location>]>
        - determine cancelled
      - announce "They are trying to breed!"
      - foreach li@<cu@3704,68,-3731,earth_1|3692,61,-3743,earth_1.list_entitites[villager]>
        - announce "%value%"