29932
History On Saturday 1 February 1879 a number of prominent men of Cambridgeshire and Huntingdonshire met in the Guildhall , Cambridge , to set up the National Skating Association with the aim of regulating the sport of fen skating .
 location: Cambridge; organization: Skating
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: Cambridge, Skating 
Answer:
 location: Cambridge; organization: Skating