14605
When his back was to the wall in 1814 he tried to reopen peace negotiations on the basis of accepting the Frankfurt proposals .
 location: Frankfurt
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: Frankfurt 
Answer:
 location: Frankfurt