2930
In contrast , although the chlorpheniramine group did have fewer symptoms than the placebo group during the study , the difference never reached statistical significance during any week of the study .
 Chemical: chlorpheniramine
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: chlorpheniramine