27633
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
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: phyllanthin; Chemical: petroleum ether; Chemical: ethanol; Chemical: ethanol