21333
The more hydrophilic polypeptides ( Asp3Phe1 ) n and ( Asp2Phe1 ) n behaved like weak polyacids showing a linear increase in pKa ( app ) with increasing alpha .
 None
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:  
Answer:
 None