3509
PURPOSE : Recent studies of cancer metastasis have focused on the role of premetastatic gene expression and circulating tumor cells .
 Anatomy: cancer; Anatomy: tumor cells
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: cancer, tumor cells 
Answer:
 Anatomy: cancer; Anatomy: tumor cells