5265
Folsomia candida could move freely on the PAH - loaded silicone , resulting in exposure via air and direct contact .
 Chemical: PAH; Chemical: silicone
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: PAH, silicone 
Answer:
 Chemical: PAH; Chemical: silicone