26622
The unique core - shell morphology is likely due to the enrichment of Co ( iii ) hydroxide in the inner core indicated by selected area electron diffraction and energy - dispersive spectroscopy .
 Chemical: Co ( iii ); Chemical: hydroxide
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: Co ( iii ), hydroxide 
Answer:
 Chemical: Co ( iii ); Chemical: hydroxide