11997
The cause of the crash of the helicopter , which went down on Sunday while on a routine resupply flight between Phnom Penh and Stung Treng , was not known .
 location: Stung Treng; location: Phnom Penh
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, else, organization, person 
Text: {0} 
 Entities: Stung Treng, Phnom Penh 
Answer:
 location: Stung Treng; location: Phnom Penh