6462
After extensive rapids , turbulent sections and cataracts in Laos , the river enters the country at Stung Treng province , is predominantly calm and navigable during the entire year as it widens considerably in the lowlands .
 location: Laos; location: Stung Treng
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: Laos, Stung Treng 
Answer:
 location: Laos; location: Stung Treng