4194
The statistical analysis of aromatic rings program allows for an automated search for anion - pi interactions between phenylalanine residues and carboxylic acid moieties of neighboring aspartic acid or glutamic acid residues in protein data bank ( PDB ) structures .
 Chemical: phenylalanine; Chemical: carboxylic acid; Chemical: aspartic acid; Chemical: glutamic acid
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: phenylalanine, carboxylic acid, aspartic acid, glutamic acid 
Answer:
 Chemical: phenylalanine; Chemical: carboxylic acid; Chemical: aspartic acid; Chemical: glutamic acid