11140
This is the first study identifying the effect OTA may have on production of the steroid hormone estradiol .
 Chemical: steroid; Chemical: estradiol
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: steroid, estradiol 
Answer:
 Chemical: steroid; Chemical: estradiol