<Tr> <Th> Public transit </Th> <Td> Earl's Court West Brompton </Td> </Tr> <Tr> <Th> Owner </Th> <Td> Capital and Counties Plc </Td> </Tr> <Tr> <Th> Capacity </Th> <Td> 20,000 </Td> </Tr> <Tr> <Th> Surface </Th> <Td> Versatile </Td> </Tr>

What is the capacity of earls court in london