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Leiomyosarcoma in urinary bladder after cyclophosphamide therapy for retinoblastoma and review of bladder sarcomas .
 adverse effect: Leiomyosarcoma, cyclophosphamide
Given options, please tell me the relationships of all the listed entity pairs.Output format is "relation1: word1, word2; relation2: word3, word4". 
Option: adverse effect 
Text: {0} 
 Entity Pairs:  Leiomyosarcoma, cyclophosphamide 
Answer:
 adverse effect: Leiomyosarcoma, cyclophosphamide