class MiracleData(Miracle): users = Each(MiracleUsers)
class MiracleData(Miracle): countries = Each("country", MiracleCountry)
class MiracleUsers(Miracle): users = Each(MiracleUser)
class MiracleCountry(Miracle): name = At("name", is_attr=True) rank = At("rank", convertion=int) year = At("year", convertion=int) neigbors = Each("neighbor", MiracleNeigbor)