9026
Rhein naturally occurs in anthraquinone ( 1 , 3 , 8 - trihydroxy - 6 - methyl anthraquinone ) , which is found in R . palmatum L . and related plants such as rhubarb .
 Chemical: Rhein; Chemical: anthraquinone; Chemical: 1 , 3 , 8 - trihydroxy - 6 - methyl anthraquinone
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: Rhein; Chemical: anthraquinone; Chemical: 1 , 3 , 8 - trihydroxy - 6 - methyl anthraquinone