27280
MATERIALS AND METHODS : Anti - ulcerogenic effects of the balsam " Styrax liquidus " itself and its fractions obtained by successive solvent extractions with chloroform and n - butanol , were investigated against the ethanol - induced peptic ulcer model in rats .
 Chemical: chloroform; Chemical: n - butanol; Chemical: ethanol
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: chloroform, n - butanol, ethanol 
Answer:
 Chemical: chloroform; Chemical: n - butanol; Chemical: ethanol