V0 := newoid();
  V1 := newoid();
    community_world.insert(oid(V0),oid(V1));
      world_name.insert(oid(V1),"casa");
    community_people.insert(oid(V0),oid(V1));
  V2 := newoid();
      people_person.insert(oid(V1),oid(V2));
        person_name.insert(oid(V2),"alice");
      people_person.insert(oid(V1),oid(V2));
        person_name.insert(oid(V2),"sebastiaan");
      ...