261641
Subsequently , the current charge-scheme was prolonged until December 31 , 2011 and starting from January 16 , 2012 a new scheme ( called Area C ) was introduced , actually converting it from a pollution-charge to a conventional congestion charge .
 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