4473
BACKGROUND : Tamoxifen is a candidate chemopreventive agent in breast cancer , although the drug may be associated with the development of endometrial cancer .
 Chemical: Tamoxifen; Disease: breast cancer; Disease: endometrial cancer
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: Tamoxifen; Disease: breast cancer; Disease: endometrial cancer