27170
One - dimensional micelles formed by the self - assembly of crystalline - coil poly ( ferrocenyldimethylsilane ) ( PFS ) block copolymers exhibit self - seeding behavior when solutions of short micelle fragments are heated above a certain temperature and then cooled back to room temperature .
 Chemical: poly ( ferrocenyldimethylsilane ); Chemical: PFS
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: poly ( ferrocenyldimethylsilane ), PFS 
Answer:
 Chemical: poly ( ferrocenyldimethylsilane ); Chemical: PFS