19817
Properties and self - assembled packing morphology of long alkyl - chained substituted polyhedral oligomeric silsesquioxanes ( POSS ) cages .
 Chemical: polyhedral oligomeric silsesquioxanes; Chemical: POSS
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: polyhedral oligomeric silsesquioxanes, POSS 
Answer:
 Chemical: polyhedral oligomeric silsesquioxanes; Chemical: POSS