15690
This study in patients with highly variable serum levels of 25 - hydroxyvitamin D could not reveal any relationship between vitamin D and 4 beta - hydroxycholesterol , an endogenous biomarker of CYP3A activity .
 Chemical: 25 - hydroxyvitamin D; Chemical: vitamin D; Chemical: 4 beta - hydroxycholesterol
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: 25 - hydroxyvitamin D, vitamin D, 4 beta - hydroxycholesterol 
Answer:
 Chemical: 25 - hydroxyvitamin D; Chemical: vitamin D; Chemical: 4 beta - hydroxycholesterol