3561
first great western is preparing to distribute thousands of leaflets on board its trains to inform customers about a major track improvement .
 message topic: leaflets, improvement
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:
 message topic: leaflets, improvement