278559
Since the supply of this material was rather limited it was said that a large amount of " fake " ejiao was also manufactured , using skins from mule s , horse s , camel s , pigs , and sometimes , it was said , even from old shoes ; a bit of " real stuff " was added to it , to deceive consumers .
 None
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:  
Answer:
 None