15293
Fused silica microcapillaries were functionalized with spiropyran - polymer brushes using surface - initiated ring - opening metathesis polymerization .
 Chemical: silica; Chemical: spiropyran
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: silica, spiropyran 
Answer:
 Chemical: silica; Chemical: spiropyran