34887
Molecular orbital theory predicts a stable " curocene " complex ( η-CH ) Cm , but it has not been reported experimentally yet .
 location: Cm
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Cm 
Answer:
 location: Cm