32764
900 " km ; traditional trade carried on by means of shallow-draft dugouts ; Oubangui is the most important river , navigable all year to craft drawing 0.6 m or less ; 282 " km navigable to craft drawing as much as 1.8 m .
 location: Oubangui
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: Oubangui 
Answer:
 location: Oubangui