Property={id=0, price=300000} constructed Land={Property={id=0, price=300000}, lot_size=10000, water=0} constructed ----------- Property={id=1, price=600000} constructed Land={Property={id=1, price=600000}, lot_size=10000, water=0} constructed House={Land={Property={id=1, price=600000}, lot_size=10000, water=0}, size=2000} constructed ----------- House={Land={Property={id=1, price=600000}, lot_size=10000, water=0}, size=2000} destructed Land={Property={id=1, price=600000}, lot_size=10000, water=0} destructed Property={id=1, price=600000} destructed Land={Property={id=0, price=300000}, lot_size=10000, water=0} destructed Property={id=0, price=300000} destructed