32469
In the south , the principal rivers flow southwestward or westward directly to the Gulf of Guinea – the Wouri , and lesser Dibamba , Bimbia and Mungo to the Cameroon estuary near Douala ; Sanaga , Nyong , and Ntem further south along the coast ; Akwayafe and Manyu ( which joins Nigerian Cross ) , and the lesser Ndian and Meme north of the coast .
 location: Gulf of Guinea; location: Wouri; location: Dibamba; location: Bimbia; location: Mungo; location: Cameroon; location: Douala; location: Sanaga; location: Nyong; location: Ntem; location: Akwayafe; location: Manyu; location: Nigerian Cross; location: Ndian; location: Meme
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: Gulf of Guinea, Wouri, Dibamba, Bimbia, Mungo, Cameroon, Douala, Sanaga, Nyong, Ntem, Akwayafe, Manyu, Nigerian Cross, Ndian, Meme 
Answer:
 location: Gulf of Guinea; location: Wouri; location: Dibamba; location: Bimbia; location: Mungo; location: Cameroon; location: Douala; location: Sanaga; location: Nyong; location: Ntem; location: Akwayafe; location: Manyu; location: Nigerian Cross; location: Ndian; location: Meme