Table:
text: Ethnic groups in London
Black Population of London
Black Population of London
Rank_ London_Borough Black_African_Population Black_Caribbean_Population Other_Black_Population Total_Black_Population
1 Lambeth 35187 28886 14469 78542
2 Southwark 47413 17974 12124 77511
3 Lewisham 32025 30854 12063 74942
4 Croydon 28981 31320 12955 73256
5 Newham 37811 15050 7395 60256
6 Hackney 27976 19168 9714 56858
7 Brent 24391 23723 10518 58632
8 Enfield 28222 17334 8131 53687
9 Greenwich 35164 8051 5440 48655
10 Haringey 23037 18087 6706 47830
11 Waltham Forest 18815 18841 7135 44791
12 Barking and Dagenham 28685 5227 3228 37140
13 Ealing 17299 13192 6369 36860
14 Barnet 19392 4468 3571 27431
15 Islington 12622 7943 5729 26294
16 Redbridge 12357 9064 3424 24845

Question: If the black African population accounts for 37811 among the ethnic groups in London, how much is the other black population?

Question: Among the ethnic groups in London, where is the London borough with the black Caribbean population of 17974?

Question: Among the ethnic groups in London's black population of London, what is the rank of the London Borough of Southwark?