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Different samples will be collected and analyzed for five PCAHs including pyrene , benzo ( a ) anthracene , benzo ( e ) pyrene , benzoflouroanthene , and benzo ( a ) pyrene .
 Chemical: PCAHs; Chemical: pyrene; Chemical: benzo ( a ) anthracene; Chemical: benzo ( e ) pyrene; Chemical: benzoflouroanthene; Chemical: benzo ( a ) pyrene
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: PCAHs, pyrene, benzo ( a ) anthracene, benzo ( e ) pyrene, benzoflouroanthene, benzo ( a ) pyrene 
Answer:
 Chemical: PCAHs; Chemical: pyrene; Chemical: benzo ( a ) anthracene; Chemical: benzo ( e ) pyrene; Chemical: benzoflouroanthene; Chemical: benzo ( a ) pyrene