27279
In order to evaluate the claimed activity , we studied the anti - ulcerogenic effect of Styrax liquidus by using an in vivo anti - ulcerogenic activity model and to determine the chemical composition of the balsam .
 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