2177
Expression of osteoprotegerin and RANK ligand in breast cancer bone metastasis .
 Anatomy: breast cancer; Anatomy: bone
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Anatomy 
Text: {0} 
 Entities: breast cancer, bone 
Answer:
 Anatomy: breast cancer; Anatomy: bone