23289
Combinatorial Design of Hydrolytically Degradable , Bone - like Biocomposites Based on PHEMA and Hydroxyapatite .
 Chemical: PHEMA; Chemical: Hydroxyapatite
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: PHEMA, Hydroxyapatite 
Answer:
 Chemical: PHEMA; Chemical: Hydroxyapatite