22595
It appears that different repeated sequence patterns cause different conformational changes of the polythiophene , from a more relaxed form to an extremely rigid one .
 Chemical: polythiophene
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: polythiophene 
Answer:
 Chemical: polythiophene