48843
Many other countries and districts in Southeast Asia , such as Vietnam and Cambodia , have geological environments that produce groundwater with a high arsenic content .
 location: Southeast Asia; location: Vietnam; location: Cambodia
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: Southeast Asia, Vietnam, Cambodia 
Answer:
 location: Southeast Asia; location: Vietnam; location: Cambodia