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Three kinds of phyllanthin crystals , recrystallized by petroleum ether , absolute ethanol and 25 % ethanol solution , showed only one polymorph and no polymorphic impurity .
 Chemical: phyllanthin; Chemical: petroleum ether; Chemical: ethanol; 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: phyllanthin, petroleum ether, ethanol, ethanol 
Answer:
 Chemical: phyllanthin; Chemical: petroleum ether; Chemical: ethanol; Chemical: ethanol