4607
such an uneasy state of affairs existed until the fifth century , when the empire 's rhine barrier was breached , allowing a vast , mixed horde of barbarians to stream into italy , thereby laying the groundwork for the kingdoms that would eventually come to dominate the european continent .
 member collection: horde, barbarians
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: component whole, NA, instrument agency, member collection, cause effect, entity destination, content container, message topic, product producer, entity origin 
Text: {0} 
 Entity Pairs:  horde, barbarians 
Answer:
 member collection: horde, barbarians