11155
Biocatalytic production of alpha - hydroxy ketones and vicinal diols by yeast and human aldo - keto reductases .
 Chemical: alpha - hydroxy ketones; Chemical: vicinal diols
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: alpha - hydroxy ketones, vicinal diols 
Answer:
 Chemical: alpha - hydroxy ketones; Chemical: vicinal diols