2928
Symptoms relief in the group receiving the highest concentration of azelastine ( 2 . 0 mg twice daily ) was statistically greater than in the placebo group during all weeks of the study .
 Chemical: azelastine
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: azelastine 
Answer:
 Chemical: azelastine