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Valsartan , a new angiotensin II antagonist for the treatment of essential hypertension : a comparative study of the efficacy and safety against amlodipine .
 Chemical: Valsartan; Chemical: angiotensin II; Disease: hypertension; Chemical: amlodipine
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: Valsartan; Chemical: angiotensin II; Disease: hypertension; Chemical: amlodipine