267
An objective response was observed in 73 . 5 % of the patients ( 95 % confidence interval [ CI ] , 55 . 6 - 87 . 1 % ) , including 4 complete responses ( 11 . 7 % ) .
 None
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities:  
Answer:
 None