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The chimpanzee ( " P. troglodytes " ) who lives north of the Congo River , and the bonobo ( " P. paniscus " ) who lives south of it , were once considered to be the same species , but since 1928 they have been recognized as distinct .
 location: Congo River
Please list all entity words in the text that fit the category.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} 
Answer:
 location: Congo River