4443
i had to battle through an aurora of polar bears to get to the station , where all the trains were cancelled and the one that i finally got took 37 hours to get to london , where there is no snow and it is about 20c like a summer day .
 member collection: aurora, polar bears
Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "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} 
Answer:
 member collection: aurora, polar bears