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There were 3379 patients randomly assigned to enalapril with a median follow - up of 974 days and 3379 patients randomly assigned to placebo with a mean follow - up of 967 days .
 Chemical: enalapril
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: enalapril