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Cyclopenta [ c ] phenanthrenes - Chemistry and biological activity .
 Chemical: Cyclopenta [ c ] phenanthrenes
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: Cyclopenta [ c ] phenanthrenes 
Answer:
 Chemical: Cyclopenta [ c ] phenanthrenes