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Full-back Billy Slater has warned his  Melbourne  Storm team-mates they will need to go toe-to-toe with  Leeds Rhinos  if they are to take the World Club Challenge trophy back to Australia .
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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: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 NA: Melbourne, Leeds Rhinos