5456
In spite of uncertainties regarding the mechanisms of carcinogenesis , several vitamins such as beta - carotene and vitamins A , C , and E , which can reduce the risk of cancer , have been identified , using animal and in vitro models of carcinogenesis .
 Anatomy: cancer
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 
Answer:
 Anatomy: cancer