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
17 Hammersmith and Fulham 10552 7111 3842 21505
18 Merton 10442 8126 2243 20811
19 Hillingdon 11275 4615 4192 20082

Question: Among ethnic groups in London, what is the black Caribbean population if the other black population is 2243

Question: Among ethnic groups in London, what is the Black Caribbean Population if Black African Population is less than 10552.0?