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However , in the C - 4 position , the model indicates a clear preference for bulky hydrophobic amino acids and for sulphur - containing amino acids .
 Chemical: amino acids; Chemical: sulphur; Chemical: amino acids
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: amino acids; Chemical: sulphur; Chemical: amino acids