312
Sixty - seven men with metastatic androgen - independent prostate cancer in an open - label trial of oral thalidomide underwent neurologic examinations and nerve conduction studies ( NCS ) prior to and at 3 - month intervals during treatment .
 Chemical: androgen; Disease: prostate cancer; Chemical: thalidomide
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: androgen; Disease: prostate cancer; Chemical: thalidomide