13123
The mineralization efficiencies of phenanthrene sorbed on the four kinds of MWCNTs were 2 . 38 , 8 . 84 , 23 . 88 , and 31 . 47 % , respectively , after incubation for 35 d , which were positively correlated with the sum of fast and slow desorption fractions of phenanthrene ( p < 0 . 05 ) .
 Chemical: phenanthrene; Chemical: phenanthrene
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: phenanthrene, phenanthrene 
Answer:
 Chemical: phenanthrene; Chemical: phenanthrene