4410
Is polycystic ovary syndrome , a state of relative estrogen excess , a real risk factor for estrogen - dependant malignancies ?
 Chemical: estrogen; Chemical: estrogen
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: estrogen; Chemical: estrogen