4703
This means they will be treated free of charge with anti retra - viral drugs , which , have been proven in clinical trials elsewhere in Africa to dramatically reduce the risk of mother to child transmission .
 person: they; person: mother; person: child; location: elsewhere in Africa
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
 Entities: they, mother, child, elsewhere in Africa 
Answer:
 person: they; person: mother; person: child; location: elsewhere in Africa