14510
The X - ray absorption near edge structure ( XANES ) at the Co K - edge showed that the oxidation state of cobalt is close to 3 + .
 Chemical: Co; Chemical: cobalt
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Co; Chemical: cobalt